Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1 | /* |
Willy Tarreau | b277d6e | 2012-05-11 16:59:14 +0200 | [diff] [blame] | 2 | * Functions used to send/receive data using SOCK_STREAM sockets. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 3 | * |
Willy Tarreau | b277d6e | 2012-05-11 16:59:14 +0200 | [diff] [blame] | 4 | * Copyright 2000-2012 Willy Tarreau <w@1wt.eu> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; either version |
| 9 | * 2 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | */ |
| 12 | |
Willy Tarreau | 6b4aad4 | 2009-01-18 21:59:13 +0100 | [diff] [blame] | 13 | #define _GNU_SOURCE |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 14 | #include <errno.h> |
| 15 | #include <fcntl.h> |
| 16 | #include <stdio.h> |
| 17 | #include <stdlib.h> |
| 18 | |
| 19 | #include <sys/socket.h> |
| 20 | #include <sys/stat.h> |
| 21 | #include <sys/types.h> |
| 22 | |
Dmitry Sivachenko | caf5898 | 2009-08-24 15:11:06 +0400 | [diff] [blame] | 23 | #include <netinet/tcp.h> |
| 24 | |
Willy Tarreau | 2dd0d47 | 2006-06-29 17:53:05 +0200 | [diff] [blame] | 25 | #include <common/compat.h> |
Willy Tarreau | e3ba5f0 | 2006-06-29 18:54:54 +0200 | [diff] [blame] | 26 | #include <common/config.h> |
Willy Tarreau | d6f087e | 2008-01-18 17:20:13 +0100 | [diff] [blame] | 27 | #include <common/debug.h> |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 28 | #include <common/standard.h> |
Willy Tarreau | 0c303ee | 2008-07-07 00:09:58 +0200 | [diff] [blame] | 29 | #include <common/ticks.h> |
Willy Tarreau | 2dd0d47 | 2006-06-29 17:53:05 +0200 | [diff] [blame] | 30 | #include <common/time.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 31 | |
Willy Tarreau | 2d21279 | 2008-08-27 21:41:35 +0200 | [diff] [blame] | 32 | #include <proto/buffers.h> |
Willy Tarreau | 8b11708 | 2012-08-06 15:06:49 +0200 | [diff] [blame^] | 33 | #include <proto/connection.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 34 | #include <proto/fd.h> |
Willy Tarreau | eb47268 | 2010-05-28 18:46:57 +0200 | [diff] [blame] | 35 | #include <proto/freq_ctr.h> |
| 36 | #include <proto/log.h> |
Willy Tarreau | 3eba98a | 2009-01-25 13:56:13 +0100 | [diff] [blame] | 37 | #include <proto/pipe.h> |
Willy Tarreau | fe598a7 | 2010-09-21 21:48:23 +0200 | [diff] [blame] | 38 | #include <proto/protocols.h> |
Willy Tarreau | c63190d | 2012-05-11 14:23:52 +0200 | [diff] [blame] | 39 | #include <proto/sock_raw.h> |
Willy Tarreau | 73b013b | 2012-05-21 16:31:45 +0200 | [diff] [blame] | 40 | #include <proto/stream_interface.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 41 | #include <proto/task.h> |
| 42 | |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 43 | #include <types/global.h> |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 44 | |
Willy Tarreau | b277d6e | 2012-05-11 16:59:14 +0200 | [diff] [blame] | 45 | /* main event functions used to move data between sockets and buffers */ |
Willy Tarreau | 239d718 | 2012-07-23 18:53:03 +0200 | [diff] [blame] | 46 | static int sock_raw_read(struct connection *conn); |
| 47 | static int sock_raw_write(struct connection *conn); |
Willy Tarreau | b277d6e | 2012-05-11 16:59:14 +0200 | [diff] [blame] | 48 | static void sock_raw_data_finish(struct stream_interface *si); |
| 49 | static void sock_raw_shutr(struct stream_interface *si); |
| 50 | static void sock_raw_shutw(struct stream_interface *si); |
| 51 | static void sock_raw_chk_rcv(struct stream_interface *si); |
| 52 | static void sock_raw_chk_snd(struct stream_interface *si); |
| 53 | |
| 54 | |
Willy Tarreau | 6b4aad4 | 2009-01-18 21:59:13 +0100 | [diff] [blame] | 55 | #if defined(CONFIG_HAP_LINUX_SPLICE) |
Willy Tarreau | 43d8fb2 | 2011-08-22 17:12:02 +0200 | [diff] [blame] | 56 | #include <common/splice.h> |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 57 | |
| 58 | /* A pipe contains 16 segments max, and it's common to see segments of 1448 bytes |
| 59 | * because of timestamps. Use this as a hint for not looping on splice(). |
| 60 | */ |
| 61 | #define SPLICE_FULL_HINT 16*1448 |
| 62 | |
Willy Tarreau | a9de333 | 2009-11-28 07:47:10 +0100 | [diff] [blame] | 63 | /* how many data we attempt to splice at once when the buffer is configured for |
| 64 | * infinite forwarding */ |
| 65 | #define MAX_SPLICE_AT_ONCE (1<<30) |
| 66 | |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 67 | /* Returns : |
| 68 | * -1 if splice is not possible or not possible anymore and we must switch to |
| 69 | * user-land copy (eg: to_forward reached) |
| 70 | * 0 when we know that polling is required to get more data (EAGAIN) |
| 71 | * 1 for all other cases (we can safely try again, or if an activity has been |
| 72 | * detected (DATA/NULL/ERR)) |
| 73 | * Sets : |
| 74 | * BF_READ_NULL |
| 75 | * BF_READ_PARTIAL |
| 76 | * BF_WRITE_PARTIAL (during copy) |
Willy Tarreau | ba0b63d | 2009-09-20 08:09:44 +0200 | [diff] [blame] | 77 | * BF_OUT_EMPTY (during copy) |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 78 | * SI_FL_ERR |
| 79 | * SI_FL_WAIT_ROOM |
| 80 | * (SI_FL_WAIT_RECV) |
Willy Tarreau | 3eba98a | 2009-01-25 13:56:13 +0100 | [diff] [blame] | 81 | * |
| 82 | * This function automatically allocates a pipe from the pipe pool. It also |
| 83 | * carefully ensures to clear b->pipe whenever it leaves the pipe empty. |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 84 | */ |
Willy Tarreau | b277d6e | 2012-05-11 16:59:14 +0200 | [diff] [blame] | 85 | static int sock_raw_splice_in(struct buffer *b, struct stream_interface *si) |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 86 | { |
Willy Tarreau | 82a0456 | 2011-12-11 22:37:06 +0100 | [diff] [blame] | 87 | static int splice_detects_close; |
Willy Tarreau | fb7508a | 2012-05-21 16:47:54 +0200 | [diff] [blame] | 88 | int fd = si_fd(si); |
Willy Tarreau | 31971e5 | 2009-09-20 12:07:52 +0200 | [diff] [blame] | 89 | int ret; |
| 90 | unsigned long max; |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 91 | int retval = 1; |
| 92 | |
| 93 | if (!b->to_forward) |
| 94 | return -1; |
| 95 | |
| 96 | if (!(b->flags & BF_KERN_SPLICING)) |
| 97 | return -1; |
| 98 | |
Willy Tarreau | 02d6cfc | 2012-03-01 18:19:58 +0100 | [diff] [blame] | 99 | if (buffer_not_empty(b)) { |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 100 | /* We're embarrassed, there are already data pending in |
| 101 | * the buffer and we don't want to have them at two |
| 102 | * locations at a time. Let's indicate we need some |
| 103 | * place and ask the consumer to hurry. |
| 104 | */ |
| 105 | si->flags |= SI_FL_WAIT_ROOM; |
| 106 | EV_FD_CLR(fd, DIR_RD); |
| 107 | b->rex = TICK_ETERNITY; |
Willy Tarreau | 73b013b | 2012-05-21 16:31:45 +0200 | [diff] [blame] | 108 | si_chk_snd(b->cons); |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 109 | return 1; |
| 110 | } |
| 111 | |
Willy Tarreau | 3eba98a | 2009-01-25 13:56:13 +0100 | [diff] [blame] | 112 | if (unlikely(b->pipe == NULL)) { |
| 113 | if (pipes_used >= global.maxpipes || !(b->pipe = get_pipe())) { |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 114 | b->flags &= ~BF_KERN_SPLICING; |
| 115 | return -1; |
| 116 | } |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 117 | } |
| 118 | |
Willy Tarreau | 3eba98a | 2009-01-25 13:56:13 +0100 | [diff] [blame] | 119 | /* At this point, b->pipe is valid */ |
| 120 | |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 121 | while (1) { |
Willy Tarreau | a9de333 | 2009-11-28 07:47:10 +0100 | [diff] [blame] | 122 | if (b->to_forward == BUF_INFINITE_FORWARD) |
| 123 | max = MAX_SPLICE_AT_ONCE; |
| 124 | else |
| 125 | max = b->to_forward; |
| 126 | |
Willy Tarreau | 31971e5 | 2009-09-20 12:07:52 +0200 | [diff] [blame] | 127 | if (!max) { |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 128 | /* It looks like the buffer + the pipe already contain |
| 129 | * the maximum amount of data to be transferred. Try to |
| 130 | * send those data immediately on the other side if it |
| 131 | * is currently waiting. |
| 132 | */ |
| 133 | retval = -1; /* end of forwarding */ |
| 134 | break; |
| 135 | } |
| 136 | |
Willy Tarreau | 3eba98a | 2009-01-25 13:56:13 +0100 | [diff] [blame] | 137 | ret = splice(fd, NULL, b->pipe->prod, NULL, max, |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 138 | SPLICE_F_MOVE|SPLICE_F_NONBLOCK); |
| 139 | |
| 140 | if (ret <= 0) { |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 141 | if (ret == 0) { |
Willy Tarreau | 98b306b | 2009-01-25 11:11:32 +0100 | [diff] [blame] | 142 | /* connection closed. This is only detected by |
Willy Tarreau | 82a0456 | 2011-12-11 22:37:06 +0100 | [diff] [blame] | 143 | * recent kernels (>= 2.6.27.13). If we notice |
| 144 | * it works, we store the info for later use. |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 145 | */ |
Willy Tarreau | 82a0456 | 2011-12-11 22:37:06 +0100 | [diff] [blame] | 146 | splice_detects_close = 1; |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 147 | b->flags |= BF_READ_NULL; |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 148 | retval = 1; /* no need for further polling */ |
| 149 | break; |
| 150 | } |
| 151 | |
| 152 | if (errno == EAGAIN) { |
| 153 | /* there are two reasons for EAGAIN : |
| 154 | * - nothing in the socket buffer (standard) |
| 155 | * - pipe is full |
Willy Tarreau | 98b306b | 2009-01-25 11:11:32 +0100 | [diff] [blame] | 156 | * - the connection is closed (kernel < 2.6.27.13) |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 157 | * Since we don't know if pipe is full, we'll |
| 158 | * stop if the pipe is not empty. Anyway, we |
| 159 | * will almost always fill/empty the pipe. |
| 160 | */ |
| 161 | |
Willy Tarreau | 3eba98a | 2009-01-25 13:56:13 +0100 | [diff] [blame] | 162 | if (b->pipe->data) { |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 163 | si->flags |= SI_FL_WAIT_ROOM; |
| 164 | retval = 1; |
| 165 | break; |
| 166 | } |
| 167 | |
Willy Tarreau | 82a0456 | 2011-12-11 22:37:06 +0100 | [diff] [blame] | 168 | /* We don't know if the connection was closed, |
| 169 | * but if we know splice detects close, then we |
| 170 | * know it for sure. |
Willy Tarreau | 98b306b | 2009-01-25 11:11:32 +0100 | [diff] [blame] | 171 | * But if we're called upon POLLIN with an empty |
Willy Tarreau | 82a0456 | 2011-12-11 22:37:06 +0100 | [diff] [blame] | 172 | * pipe and get EAGAIN, it is suspect enough to |
Willy Tarreau | 98b306b | 2009-01-25 11:11:32 +0100 | [diff] [blame] | 173 | * try to fall back to the normal recv scheme |
| 174 | * which will be able to deal with the situation. |
| 175 | */ |
Willy Tarreau | 82a0456 | 2011-12-11 22:37:06 +0100 | [diff] [blame] | 176 | if (splice_detects_close) |
| 177 | retval = 0; /* we know for sure that it's EAGAIN */ |
| 178 | else |
| 179 | retval = -1; |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 180 | break; |
| 181 | } |
Willy Tarreau | dc340a9 | 2009-06-28 23:10:19 +0200 | [diff] [blame] | 182 | |
Willy Tarreau | a9de333 | 2009-11-28 07:47:10 +0100 | [diff] [blame] | 183 | if (errno == ENOSYS || errno == EINVAL) { |
Willy Tarreau | dc340a9 | 2009-06-28 23:10:19 +0200 | [diff] [blame] | 184 | /* splice not supported on this end, disable it */ |
| 185 | b->flags &= ~BF_KERN_SPLICING; |
| 186 | si->flags &= ~SI_FL_CAP_SPLICE; |
| 187 | put_pipe(b->pipe); |
| 188 | b->pipe = NULL; |
| 189 | return -1; |
| 190 | } |
| 191 | |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 192 | /* here we have another error */ |
| 193 | si->flags |= SI_FL_ERR; |
| 194 | retval = 1; |
| 195 | break; |
| 196 | } /* ret <= 0 */ |
| 197 | |
Willy Tarreau | 31971e5 | 2009-09-20 12:07:52 +0200 | [diff] [blame] | 198 | if (b->to_forward != BUF_INFINITE_FORWARD) |
| 199 | b->to_forward -= ret; |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 200 | b->total += ret; |
Willy Tarreau | 3eba98a | 2009-01-25 13:56:13 +0100 | [diff] [blame] | 201 | b->pipe->data += ret; |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 202 | b->flags |= BF_READ_PARTIAL; |
Willy Tarreau | ba0b63d | 2009-09-20 08:09:44 +0200 | [diff] [blame] | 203 | b->flags &= ~BF_OUT_EMPTY; |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 204 | |
Willy Tarreau | 6f4a82c | 2009-03-21 20:43:57 +0100 | [diff] [blame] | 205 | if (b->pipe->data >= SPLICE_FULL_HINT || |
| 206 | ret >= global.tune.recv_enough) { |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 207 | /* We've read enough of it for this time. */ |
| 208 | retval = 1; |
| 209 | break; |
| 210 | } |
| 211 | } /* while */ |
| 212 | |
Willy Tarreau | 3eba98a | 2009-01-25 13:56:13 +0100 | [diff] [blame] | 213 | if (unlikely(!b->pipe->data)) { |
| 214 | put_pipe(b->pipe); |
| 215 | b->pipe = NULL; |
| 216 | } |
| 217 | |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 218 | return retval; |
| 219 | } |
| 220 | |
Willy Tarreau | 6b4aad4 | 2009-01-18 21:59:13 +0100 | [diff] [blame] | 221 | #endif /* CONFIG_HAP_LINUX_SPLICE */ |
| 222 | |
| 223 | |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 224 | /* |
Willy Tarreau | d797128 | 2006-07-29 18:36:34 +0200 | [diff] [blame] | 225 | * this function is called on a read event from a stream socket. |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 226 | * It returns 0 if we have a high confidence that we will not be |
| 227 | * able to read more data without polling first. Returns non-zero |
| 228 | * otherwise. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 229 | */ |
Willy Tarreau | 239d718 | 2012-07-23 18:53:03 +0200 | [diff] [blame] | 230 | static int sock_raw_read(struct connection *conn) |
Willy Tarreau | b277d6e | 2012-05-11 16:59:14 +0200 | [diff] [blame] | 231 | { |
Willy Tarreau | 239d718 | 2012-07-23 18:53:03 +0200 | [diff] [blame] | 232 | int fd = conn->t.sock.fd; |
Willy Tarreau | 8018471 | 2012-07-06 14:54:49 +0200 | [diff] [blame] | 233 | struct stream_interface *si = container_of(conn, struct stream_interface, conn); |
Willy Tarreau | 48adac5 | 2008-08-30 04:58:38 +0200 | [diff] [blame] | 234 | struct buffer *b = si->ib; |
Willy Tarreau | 8a7af60 | 2008-05-03 23:07:14 +0200 | [diff] [blame] | 235 | int ret, max, retval, cur_read; |
Willy Tarreau | b8949f1 | 2007-03-23 22:39:59 +0100 | [diff] [blame] | 236 | int read_poll = MAX_READ_POLL_LOOPS; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 237 | |
| 238 | #ifdef DEBUG_FULL |
Willy Tarreau | b277d6e | 2012-05-11 16:59:14 +0200 | [diff] [blame] | 239 | fprintf(stderr,"sock_raw_read : fd=%d, ev=0x%02x, owner=%p\n", fd, fdtab[fd].ev, fdtab[fd].owner); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 240 | #endif |
| 241 | |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 242 | retval = 1; |
| 243 | |
Willy Tarreau | 7154365 | 2009-07-14 19:55:05 +0200 | [diff] [blame] | 244 | /* stop immediately on errors. Note that we DON'T want to stop on |
| 245 | * POLL_ERR, as the poller might report a write error while there |
| 246 | * are still data available in the recv buffer. This typically |
| 247 | * happens when we send too large a request to a backend server |
| 248 | * which rejects it before reading it all. |
| 249 | */ |
Willy Tarreau | 8018471 | 2012-07-06 14:54:49 +0200 | [diff] [blame] | 250 | if (conn->flags & CO_FL_ERROR) |
Willy Tarreau | 6996e15 | 2007-04-30 14:37:43 +0200 | [diff] [blame] | 251 | goto out_error; |
Willy Tarreau | d6f087e | 2008-01-18 17:20:13 +0100 | [diff] [blame] | 252 | |
| 253 | /* stop here if we reached the end of data */ |
| 254 | if ((fdtab[fd].ev & (FD_POLL_IN|FD_POLL_HUP)) == FD_POLL_HUP) |
| 255 | goto out_shutdown_r; |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 256 | |
Willy Tarreau | d06e711 | 2009-03-29 10:18:41 +0200 | [diff] [blame] | 257 | /* maybe we were called immediately after an asynchronous shutr */ |
| 258 | if (b->flags & BF_SHUTR) |
| 259 | goto out_wakeup; |
| 260 | |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 261 | #if defined(CONFIG_HAP_LINUX_SPLICE) |
Willy Tarreau | 14acc70 | 2011-05-11 20:47:24 +0200 | [diff] [blame] | 262 | if (b->to_forward >= MIN_SPLICE_FORWARD && b->flags & BF_KERN_SPLICING) { |
Willy Tarreau | 98b306b | 2009-01-25 11:11:32 +0100 | [diff] [blame] | 263 | |
| 264 | /* Under Linux, if FD_POLL_HUP is set, we have reached the end. |
| 265 | * Since older splice() implementations were buggy and returned |
| 266 | * EAGAIN on end of read, let's bypass the call to splice() now. |
| 267 | */ |
| 268 | if (fdtab[fd].ev & FD_POLL_HUP) |
| 269 | goto out_shutdown_r; |
| 270 | |
Willy Tarreau | b277d6e | 2012-05-11 16:59:14 +0200 | [diff] [blame] | 271 | retval = sock_raw_splice_in(b, si); |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 272 | |
| 273 | if (retval >= 0) { |
| 274 | if (si->flags & SI_FL_ERR) |
| 275 | goto out_error; |
| 276 | if (b->flags & BF_READ_NULL) |
| 277 | goto out_shutdown_r; |
| 278 | goto out_wakeup; |
| 279 | } |
| 280 | /* splice not possible (anymore), let's go on on standard copy */ |
| 281 | } |
| 282 | #endif |
Willy Tarreau | 8a7af60 | 2008-05-03 23:07:14 +0200 | [diff] [blame] | 283 | cur_read = 0; |
Willy Tarreau | 6996e15 | 2007-04-30 14:37:43 +0200 | [diff] [blame] | 284 | while (1) { |
Willy Tarreau | 9dab5fc | 2012-05-07 11:56:55 +0200 | [diff] [blame] | 285 | max = bi_avail(b); |
Willy Tarreau | 864e825 | 2009-12-28 17:36:37 +0100 | [diff] [blame] | 286 | |
Willy Tarreau | 9dab5fc | 2012-05-07 11:56:55 +0200 | [diff] [blame] | 287 | if (!max) { |
Willy Tarreau | 864e825 | 2009-12-28 17:36:37 +0100 | [diff] [blame] | 288 | b->flags |= BF_FULL; |
| 289 | si->flags |= SI_FL_WAIT_ROOM; |
| 290 | break; |
| 291 | } |
| 292 | |
Willy Tarreau | 6996e15 | 2007-04-30 14:37:43 +0200 | [diff] [blame] | 293 | /* |
| 294 | * 1. compute the maximum block size we can read at once. |
| 295 | */ |
Willy Tarreau | 02d6cfc | 2012-03-01 18:19:58 +0100 | [diff] [blame] | 296 | if (buffer_empty(b)) { |
Willy Tarreau | 03d60bb | 2009-01-09 11:13:00 +0100 | [diff] [blame] | 297 | /* let's realign the buffer to optimize I/O */ |
Willy Tarreau | a458b67 | 2012-03-05 11:17:50 +0100 | [diff] [blame] | 298 | b->p = b->data; |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 299 | } |
Willy Tarreau | 89fa706 | 2012-03-02 16:13:16 +0100 | [diff] [blame] | 300 | else if (b->data + b->o < b->p && |
| 301 | b->p + b->i < b->data + b->size) { |
Willy Tarreau | 864e825 | 2009-12-28 17:36:37 +0100 | [diff] [blame] | 302 | /* remaining space wraps at the end, with a moving limit */ |
Willy Tarreau | 363a5bb | 2012-03-02 20:14:45 +0100 | [diff] [blame] | 303 | if (max > b->data + b->size - (b->p + b->i)) |
| 304 | max = b->data + b->size - (b->p + b->i); |
Willy Tarreau | 9c0fe59 | 2009-01-18 16:25:31 +0100 | [diff] [blame] | 305 | } |
Willy Tarreau | 864e825 | 2009-12-28 17:36:37 +0100 | [diff] [blame] | 306 | /* else max is already OK */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 307 | |
Willy Tarreau | 6996e15 | 2007-04-30 14:37:43 +0200 | [diff] [blame] | 308 | /* |
| 309 | * 2. read the largest possible block |
| 310 | */ |
Willy Tarreau | cc5cfcb | 2012-05-04 21:35:27 +0200 | [diff] [blame] | 311 | ret = recv(fd, bi_end(b), max, 0); |
Willy Tarreau | d6d0690 | 2009-08-19 11:22:33 +0200 | [diff] [blame] | 312 | |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 313 | if (ret > 0) { |
Willy Tarreau | 02d6cfc | 2012-03-01 18:19:58 +0100 | [diff] [blame] | 314 | b->i += ret; |
Willy Tarreau | 8a7af60 | 2008-05-03 23:07:14 +0200 | [diff] [blame] | 315 | cur_read += ret; |
Willy Tarreau | b38903c | 2008-11-23 21:33:29 +0100 | [diff] [blame] | 316 | |
Willy Tarreau | 2e046c6 | 2012-03-01 16:08:30 +0100 | [diff] [blame] | 317 | /* if we're allowed to directly forward data, we must update ->o */ |
Willy Tarreau | 31971e5 | 2009-09-20 12:07:52 +0200 | [diff] [blame] | 318 | if (b->to_forward && !(b->flags & (BF_SHUTW|BF_SHUTW_NOW))) { |
| 319 | unsigned long fwd = ret; |
| 320 | if (b->to_forward != BUF_INFINITE_FORWARD) { |
| 321 | if (fwd > b->to_forward) |
| 322 | fwd = b->to_forward; |
| 323 | b->to_forward -= fwd; |
| 324 | } |
Willy Tarreau | 328582c | 2012-05-05 23:32:27 +0200 | [diff] [blame] | 325 | b_adv(b, fwd); |
Willy Tarreau | 0abebcc | 2009-01-08 00:09:41 +0100 | [diff] [blame] | 326 | } |
Willy Tarreau | f890dc9 | 2008-12-13 21:12:26 +0100 | [diff] [blame] | 327 | |
Willy Tarreau | 8018471 | 2012-07-06 14:54:49 +0200 | [diff] [blame] | 328 | if (conn->flags & CO_FL_WAIT_L4_CONN) { |
| 329 | conn->flags &= ~CO_FL_WAIT_L4_CONN; |
Willy Tarreau | 8ae52cb | 2012-05-20 10:38:46 +0200 | [diff] [blame] | 330 | si->exp = TICK_ETERNITY; |
| 331 | } |
Willy Tarreau | b38903c | 2008-11-23 21:33:29 +0100 | [diff] [blame] | 332 | |
Willy Tarreau | 3da77c5 | 2008-08-29 09:58:42 +0200 | [diff] [blame] | 333 | b->flags |= BF_READ_PARTIAL; |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 334 | b->total += ret; |
Willy Tarreau | 9641e8f | 2007-03-23 23:02:09 +0100 | [diff] [blame] | 335 | |
Willy Tarreau | 9dab5fc | 2012-05-07 11:56:55 +0200 | [diff] [blame] | 336 | if (bi_full(b)) { |
Willy Tarreau | 6996e15 | 2007-04-30 14:37:43 +0200 | [diff] [blame] | 337 | /* The buffer is now full, there's no point in going through |
| 338 | * the loop again. |
| 339 | */ |
Willy Tarreau | 02d6cfc | 2012-03-01 18:19:58 +0100 | [diff] [blame] | 340 | if (!(b->flags & BF_STREAMER_FAST) && (cur_read == buffer_len(b))) { |
Willy Tarreau | 8a7af60 | 2008-05-03 23:07:14 +0200 | [diff] [blame] | 341 | b->xfer_small = 0; |
| 342 | b->xfer_large++; |
| 343 | if (b->xfer_large >= 3) { |
| 344 | /* we call this buffer a fast streamer if it manages |
| 345 | * to be filled in one call 3 consecutive times. |
| 346 | */ |
| 347 | b->flags |= (BF_STREAMER | BF_STREAMER_FAST); |
| 348 | //fputc('+', stderr); |
| 349 | } |
| 350 | } |
| 351 | else if ((b->flags & (BF_STREAMER | BF_STREAMER_FAST)) && |
Willy Tarreau | a07a34e | 2009-08-16 23:27:46 +0200 | [diff] [blame] | 352 | (cur_read <= b->size / 2)) { |
Willy Tarreau | 8a7af60 | 2008-05-03 23:07:14 +0200 | [diff] [blame] | 353 | b->xfer_large = 0; |
| 354 | b->xfer_small++; |
| 355 | if (b->xfer_small >= 2) { |
| 356 | /* if the buffer has been at least half full twice, |
| 357 | * we receive faster than we send, so at least it |
| 358 | * is not a "fast streamer". |
| 359 | */ |
| 360 | b->flags &= ~BF_STREAMER_FAST; |
| 361 | //fputc('-', stderr); |
| 362 | } |
| 363 | } |
| 364 | else { |
| 365 | b->xfer_small = 0; |
| 366 | b->xfer_large = 0; |
| 367 | } |
Willy Tarreau | 9c0fe59 | 2009-01-18 16:25:31 +0100 | [diff] [blame] | 368 | |
| 369 | b->flags |= BF_FULL; |
Willy Tarreau | a456f2a | 2009-01-18 17:38:44 +0100 | [diff] [blame] | 370 | si->flags |= SI_FL_WAIT_ROOM; |
Willy Tarreau | 9c0fe59 | 2009-01-18 16:25:31 +0100 | [diff] [blame] | 371 | break; |
Willy Tarreau | 6996e15 | 2007-04-30 14:37:43 +0200 | [diff] [blame] | 372 | } |
| 373 | |
Willy Tarreau | ab3e1d3 | 2007-06-03 14:10:36 +0200 | [diff] [blame] | 374 | /* if too many bytes were missing from last read, it means that |
| 375 | * it's pointless trying to read again because the system does |
Willy Tarreau | d6f087e | 2008-01-18 17:20:13 +0100 | [diff] [blame] | 376 | * not have them in buffers. BTW, if FD_POLL_HUP was present, |
| 377 | * it means that we have reached the end and that the connection |
| 378 | * is closed. |
Willy Tarreau | ab3e1d3 | 2007-06-03 14:10:36 +0200 | [diff] [blame] | 379 | */ |
Willy Tarreau | d6f087e | 2008-01-18 17:20:13 +0100 | [diff] [blame] | 380 | if (ret < max) { |
Willy Tarreau | 8a7af60 | 2008-05-03 23:07:14 +0200 | [diff] [blame] | 381 | if ((b->flags & (BF_STREAMER | BF_STREAMER_FAST)) && |
Willy Tarreau | a07a34e | 2009-08-16 23:27:46 +0200 | [diff] [blame] | 382 | (cur_read <= b->size / 2)) { |
Willy Tarreau | 8a7af60 | 2008-05-03 23:07:14 +0200 | [diff] [blame] | 383 | b->xfer_large = 0; |
| 384 | b->xfer_small++; |
| 385 | if (b->xfer_small >= 3) { |
| 386 | /* we have read less than half of the buffer in |
| 387 | * one pass, and this happened at least 3 times. |
| 388 | * This is definitely not a streamer. |
| 389 | */ |
| 390 | b->flags &= ~(BF_STREAMER | BF_STREAMER_FAST); |
| 391 | //fputc('!', stderr); |
| 392 | } |
| 393 | } |
Willy Tarreau | 2bea3a1 | 2008-08-28 09:47:43 +0200 | [diff] [blame] | 394 | /* unfortunately, on level-triggered events, POLL_HUP |
| 395 | * is generally delivered AFTER the system buffer is |
| 396 | * empty, so this one might never match. |
| 397 | */ |
Willy Tarreau | d6f087e | 2008-01-18 17:20:13 +0100 | [diff] [blame] | 398 | if (fdtab[fd].ev & FD_POLL_HUP) |
| 399 | goto out_shutdown_r; |
Willy Tarreau | 2bea3a1 | 2008-08-28 09:47:43 +0200 | [diff] [blame] | 400 | |
| 401 | /* if a streamer has read few data, it may be because we |
| 402 | * have exhausted system buffers. It's not worth trying |
| 403 | * again. |
| 404 | */ |
| 405 | if (b->flags & BF_STREAMER) |
| 406 | break; |
Willy Tarreau | ab3e1d3 | 2007-06-03 14:10:36 +0200 | [diff] [blame] | 407 | |
Willy Tarreau | 6f4a82c | 2009-03-21 20:43:57 +0100 | [diff] [blame] | 408 | /* generally if we read something smaller than 1 or 2 MSS, |
| 409 | * it means that either we have exhausted the system's |
| 410 | * buffers (streamer or question-response protocol) or |
| 411 | * that the connection will be closed. Streamers are |
| 412 | * easily detected so we return early. For other cases, |
| 413 | * it's still better to perform a last read to be sure, |
| 414 | * because it may save one complete poll/read/wakeup cycle |
| 415 | * in case of shutdown. |
| 416 | */ |
| 417 | if (ret < MIN_RET_FOR_READ_LOOP && b->flags & BF_STREAMER) |
| 418 | break; |
| 419 | |
| 420 | /* if we read a large block smaller than what we requested, |
| 421 | * it's almost certain we'll never get anything more. |
| 422 | */ |
| 423 | if (ret >= global.tune.recv_enough) |
| 424 | break; |
| 425 | } |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 426 | |
Willy Tarreau | 1b194fe | 2009-03-21 21:10:04 +0100 | [diff] [blame] | 427 | if ((b->flags & BF_READ_DONTWAIT) || --read_poll <= 0) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 428 | break; |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 429 | } |
| 430 | else if (ret == 0) { |
Willy Tarreau | 6996e15 | 2007-04-30 14:37:43 +0200 | [diff] [blame] | 431 | /* connection closed */ |
Willy Tarreau | d6f087e | 2008-01-18 17:20:13 +0100 | [diff] [blame] | 432 | goto out_shutdown_r; |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 433 | } |
Willy Tarreau | 9f19529 | 2007-04-15 21:26:58 +0200 | [diff] [blame] | 434 | else if (errno == EAGAIN) { |
| 435 | /* Ignore EAGAIN but inform the poller that there is |
Willy Tarreau | af78d0f | 2009-01-08 10:09:08 +0100 | [diff] [blame] | 436 | * nothing to read left if we did not read much, ie |
| 437 | * less than what we were still expecting to read. |
| 438 | * But we may have done some work justifying to notify |
| 439 | * the task. |
Willy Tarreau | 9f19529 | 2007-04-15 21:26:58 +0200 | [diff] [blame] | 440 | */ |
Willy Tarreau | af78d0f | 2009-01-08 10:09:08 +0100 | [diff] [blame] | 441 | if (cur_read < MIN_RET_FOR_READ_LOOP) |
| 442 | retval = 0; |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 443 | break; |
| 444 | } |
| 445 | else { |
Willy Tarreau | 6996e15 | 2007-04-30 14:37:43 +0200 | [diff] [blame] | 446 | goto out_error; |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 447 | } |
Willy Tarreau | 6996e15 | 2007-04-30 14:37:43 +0200 | [diff] [blame] | 448 | } /* while (1) */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 449 | |
Willy Tarreau | 6996e15 | 2007-04-30 14:37:43 +0200 | [diff] [blame] | 450 | out_wakeup: |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 451 | return retval; |
Willy Tarreau | 6996e15 | 2007-04-30 14:37:43 +0200 | [diff] [blame] | 452 | |
Willy Tarreau | d6f087e | 2008-01-18 17:20:13 +0100 | [diff] [blame] | 453 | out_shutdown_r: |
Willy Tarreau | e5ed406 | 2008-08-30 03:17:31 +0200 | [diff] [blame] | 454 | /* we received a shutdown */ |
Willy Tarreau | d6f087e | 2008-01-18 17:20:13 +0100 | [diff] [blame] | 455 | fdtab[fd].ev &= ~FD_POLL_HUP; |
| 456 | b->flags |= BF_READ_NULL; |
Willy Tarreau | 520d95e | 2009-09-19 21:04:57 +0200 | [diff] [blame] | 457 | if (b->flags & BF_AUTO_CLOSE) |
Willy Tarreau | 418fd47 | 2009-09-06 21:37:23 +0200 | [diff] [blame] | 458 | buffer_shutw_now(b); |
Willy Tarreau | b277d6e | 2012-05-11 16:59:14 +0200 | [diff] [blame] | 459 | sock_raw_shutr(si); |
Willy Tarreau | 0c303ee | 2008-07-07 00:09:58 +0200 | [diff] [blame] | 460 | goto out_wakeup; |
Willy Tarreau | d6f087e | 2008-01-18 17:20:13 +0100 | [diff] [blame] | 461 | |
Willy Tarreau | 6996e15 | 2007-04-30 14:37:43 +0200 | [diff] [blame] | 462 | out_error: |
Willy Tarreau | cff6411 | 2008-11-03 06:26:53 +0100 | [diff] [blame] | 463 | /* Read error on the file descriptor. We mark the FD as STERROR so |
| 464 | * that we don't use it anymore. The error is reported to the stream |
| 465 | * interface which will take proper action. We must not perturbate the |
| 466 | * buffer because the stream interface wants to ensure transparent |
| 467 | * connection retries. |
Willy Tarreau | 6996e15 | 2007-04-30 14:37:43 +0200 | [diff] [blame] | 468 | */ |
Willy Tarreau | cff6411 | 2008-11-03 06:26:53 +0100 | [diff] [blame] | 469 | |
Willy Tarreau | 8018471 | 2012-07-06 14:54:49 +0200 | [diff] [blame] | 470 | conn->flags |= CO_FL_ERROR; |
Willy Tarreau | 1714e0f | 2009-03-28 20:54:53 +0100 | [diff] [blame] | 471 | EV_FD_REM(fd); |
Willy Tarreau | 9c0fe59 | 2009-01-18 16:25:31 +0100 | [diff] [blame] | 472 | retval = 1; |
| 473 | goto out_wakeup; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 474 | } |
| 475 | |
| 476 | |
| 477 | /* |
Willy Tarreau | 0c2fc1f | 2009-01-18 15:30:37 +0100 | [diff] [blame] | 478 | * This function is called to send buffer data to a stream socket. |
| 479 | * It returns -1 in case of unrecoverable error, 0 if the caller needs to poll |
Willy Tarreau | 3eba98a | 2009-01-25 13:56:13 +0100 | [diff] [blame] | 480 | * before calling it again, otherwise 1. If a pipe was associated with the |
| 481 | * buffer and it empties it, it releases it as well. |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 482 | */ |
Willy Tarreau | b277d6e | 2012-05-11 16:59:14 +0200 | [diff] [blame] | 483 | static int sock_raw_write_loop(struct stream_interface *si, struct buffer *b) |
Willy Tarreau | 0c2fc1f | 2009-01-18 15:30:37 +0100 | [diff] [blame] | 484 | { |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 485 | int write_poll = MAX_WRITE_POLL_LOOPS; |
Willy Tarreau | 0c2fc1f | 2009-01-18 15:30:37 +0100 | [diff] [blame] | 486 | int retval = 1; |
| 487 | int ret, max; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 488 | |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 489 | #if defined(CONFIG_HAP_LINUX_SPLICE) |
Willy Tarreau | 3eba98a | 2009-01-25 13:56:13 +0100 | [diff] [blame] | 490 | while (b->pipe) { |
Willy Tarreau | fb7508a | 2012-05-21 16:47:54 +0200 | [diff] [blame] | 491 | ret = splice(b->pipe->cons, NULL, si_fd(si), NULL, b->pipe->data, |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 492 | SPLICE_F_MOVE|SPLICE_F_NONBLOCK); |
| 493 | if (ret <= 0) { |
| 494 | if (ret == 0 || errno == EAGAIN) { |
| 495 | retval = 0; |
| 496 | return retval; |
| 497 | } |
| 498 | /* here we have another error */ |
| 499 | retval = -1; |
| 500 | return retval; |
| 501 | } |
| 502 | |
| 503 | b->flags |= BF_WRITE_PARTIAL; |
Willy Tarreau | 3eba98a | 2009-01-25 13:56:13 +0100 | [diff] [blame] | 504 | b->pipe->data -= ret; |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 505 | |
Willy Tarreau | 3eba98a | 2009-01-25 13:56:13 +0100 | [diff] [blame] | 506 | if (!b->pipe->data) { |
| 507 | put_pipe(b->pipe); |
| 508 | b->pipe = NULL; |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 509 | break; |
Willy Tarreau | 3eba98a | 2009-01-25 13:56:13 +0100 | [diff] [blame] | 510 | } |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 511 | |
| 512 | if (--write_poll <= 0) |
| 513 | return retval; |
Willy Tarreau | eb9fd51 | 2011-12-11 22:11:47 +0100 | [diff] [blame] | 514 | |
| 515 | /* The only reason we did not empty the pipe is that the output |
| 516 | * buffer is full. |
| 517 | */ |
| 518 | return 0; |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 519 | } |
| 520 | |
| 521 | /* At this point, the pipe is empty, but we may still have data pending |
| 522 | * in the normal buffer. |
| 523 | */ |
Willy Tarreau | 5bd8c37 | 2009-01-19 00:32:22 +0100 | [diff] [blame] | 524 | #endif |
Willy Tarreau | 2e046c6 | 2012-03-01 16:08:30 +0100 | [diff] [blame] | 525 | if (!b->o) { |
Willy Tarreau | ba0b63d | 2009-09-20 08:09:44 +0200 | [diff] [blame] | 526 | b->flags |= BF_OUT_EMPTY; |
Willy Tarreau | 0c2fc1f | 2009-01-18 15:30:37 +0100 | [diff] [blame] | 527 | return retval; |
Willy Tarreau | ba0b63d | 2009-09-20 08:09:44 +0200 | [diff] [blame] | 528 | } |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 529 | |
Willy Tarreau | 0c2fc1f | 2009-01-18 15:30:37 +0100 | [diff] [blame] | 530 | /* when we're in this loop, we already know that there is no spliced |
| 531 | * data left, and that there are sendable buffered data. |
| 532 | */ |
Willy Tarreau | 6996e15 | 2007-04-30 14:37:43 +0200 | [diff] [blame] | 533 | while (1) { |
Willy Tarreau | 89fa706 | 2012-03-02 16:13:16 +0100 | [diff] [blame] | 534 | max = b->o; |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 535 | |
Willy Tarreau | 89fa706 | 2012-03-02 16:13:16 +0100 | [diff] [blame] | 536 | /* outgoing data may wrap at the end */ |
| 537 | if (b->data + max > b->p) |
| 538 | max = b->data + max - b->p; |
Willy Tarreau | f890dc9 | 2008-12-13 21:12:26 +0100 | [diff] [blame] | 539 | |
Willy Tarreau | 6db06d3 | 2009-08-19 11:14:11 +0200 | [diff] [blame] | 540 | /* check if we want to inform the kernel that we're interested in |
| 541 | * sending more data after this call. We want this if : |
| 542 | * - we're about to close after this last send and want to merge |
| 543 | * the ongoing FIN with the last segment. |
| 544 | * - we know we can't send everything at once and must get back |
| 545 | * here because of unaligned data |
Willy Tarreau | d38b53b | 2010-01-03 11:18:34 +0100 | [diff] [blame] | 546 | * - there is still a finite amount of data to forward |
Willy Tarreau | 6db06d3 | 2009-08-19 11:14:11 +0200 | [diff] [blame] | 547 | * The test is arranged so that the most common case does only 2 |
| 548 | * tests. |
Willy Tarreau | fb14edc | 2009-06-14 15:24:37 +0200 | [diff] [blame] | 549 | */ |
Willy Tarreau | fb14edc | 2009-06-14 15:24:37 +0200 | [diff] [blame] | 550 | |
Willy Tarreau | face839 | 2010-01-03 11:37:54 +0100 | [diff] [blame] | 551 | if (MSG_NOSIGNAL && MSG_MORE) { |
Willy Tarreau | 6db06d3 | 2009-08-19 11:14:11 +0200 | [diff] [blame] | 552 | unsigned int send_flag = MSG_DONTWAIT | MSG_NOSIGNAL; |
| 553 | |
Willy Tarreau | 96e3121 | 2011-05-30 18:10:30 +0200 | [diff] [blame] | 554 | if ((!(b->flags & BF_NEVER_WAIT) && |
| 555 | ((b->to_forward && b->to_forward != BUF_INFINITE_FORWARD) || |
| 556 | (b->flags & BF_EXPECT_MORE))) || |
Willy Tarreau | 2e046c6 | 2012-03-01 16:08:30 +0100 | [diff] [blame] | 557 | ((b->flags & (BF_SHUTW|BF_SHUTW_NOW|BF_HIJACK)) == BF_SHUTW_NOW && (max == b->o)) || |
Willy Tarreau | 02d6cfc | 2012-03-01 18:19:58 +0100 | [diff] [blame] | 558 | (max != b->o)) { |
Willy Tarreau | face839 | 2010-01-03 11:37:54 +0100 | [diff] [blame] | 559 | send_flag |= MSG_MORE; |
| 560 | } |
Willy Tarreau | 6db06d3 | 2009-08-19 11:14:11 +0200 | [diff] [blame] | 561 | |
Willy Tarreau | 2be3939 | 2010-01-03 17:24:51 +0100 | [diff] [blame] | 562 | /* this flag has precedence over the rest */ |
| 563 | if (b->flags & BF_SEND_DONTWAIT) |
| 564 | send_flag &= ~MSG_MORE; |
| 565 | |
Willy Tarreau | fb7508a | 2012-05-21 16:47:54 +0200 | [diff] [blame] | 566 | ret = send(si_fd(si), bo_ptr(b), max, send_flag); |
Willy Tarreau | d6d0690 | 2009-08-19 11:22:33 +0200 | [diff] [blame] | 567 | } else { |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 568 | int skerr; |
| 569 | socklen_t lskerr = sizeof(skerr); |
| 570 | |
Willy Tarreau | fb7508a | 2012-05-21 16:47:54 +0200 | [diff] [blame] | 571 | ret = getsockopt(si_fd(si), SOL_SOCKET, SO_ERROR, &skerr, &lskerr); |
Willy Tarreau | c642348 | 2006-10-15 14:59:03 +0200 | [diff] [blame] | 572 | if (ret == -1 || skerr) |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 573 | ret = -1; |
| 574 | else |
Willy Tarreau | fb7508a | 2012-05-21 16:47:54 +0200 | [diff] [blame] | 575 | ret = send(si_fd(si), bo_ptr(b), max, MSG_DONTWAIT); |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 576 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 577 | |
| 578 | if (ret > 0) { |
Willy Tarreau | 505e34a | 2012-07-06 10:17:53 +0200 | [diff] [blame] | 579 | if (si->conn.flags & CO_FL_WAIT_L4_CONN) { |
| 580 | si->conn.flags &= ~CO_FL_WAIT_L4_CONN; |
Willy Tarreau | 8ae52cb | 2012-05-20 10:38:46 +0200 | [diff] [blame] | 581 | si->exp = TICK_ETERNITY; |
| 582 | } |
Willy Tarreau | b38903c | 2008-11-23 21:33:29 +0100 | [diff] [blame] | 583 | |
Willy Tarreau | 3da77c5 | 2008-08-29 09:58:42 +0200 | [diff] [blame] | 584 | b->flags |= BF_WRITE_PARTIAL; |
Willy Tarreau | e393fe2 | 2008-08-16 22:18:07 +0200 | [diff] [blame] | 585 | |
Willy Tarreau | 02d6cfc | 2012-03-01 18:19:58 +0100 | [diff] [blame] | 586 | b->o -= ret; |
| 587 | if (likely(!buffer_len(b))) |
Willy Tarreau | 0c2fc1f | 2009-01-18 15:30:37 +0100 | [diff] [blame] | 588 | /* optimize data alignment in the buffer */ |
Willy Tarreau | a458b67 | 2012-03-05 11:17:50 +0100 | [diff] [blame] | 589 | b->p = b->data; |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 590 | |
Willy Tarreau | 9dab5fc | 2012-05-07 11:56:55 +0200 | [diff] [blame] | 591 | if (likely(!bi_full(b))) |
Willy Tarreau | 02d6cfc | 2012-03-01 18:19:58 +0100 | [diff] [blame] | 592 | b->flags &= ~BF_FULL; |
| 593 | |
Willy Tarreau | 2e046c6 | 2012-03-01 16:08:30 +0100 | [diff] [blame] | 594 | if (!b->o) { |
Willy Tarreau | f17810e | 2012-03-09 18:10:44 +0100 | [diff] [blame] | 595 | /* Always clear both flags once everything has been sent, they're one-shot */ |
| 596 | b->flags &= ~(BF_EXPECT_MORE | BF_SEND_DONTWAIT); |
Willy Tarreau | ba0b63d | 2009-09-20 08:09:44 +0200 | [diff] [blame] | 597 | if (likely(!b->pipe)) |
| 598 | b->flags |= BF_OUT_EMPTY; |
Willy Tarreau | 0c2fc1f | 2009-01-18 15:30:37 +0100 | [diff] [blame] | 599 | break; |
Willy Tarreau | ba0b63d | 2009-09-20 08:09:44 +0200 | [diff] [blame] | 600 | } |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 601 | |
Willy Tarreau | ab3e1d3 | 2007-06-03 14:10:36 +0200 | [diff] [blame] | 602 | /* if the system buffer is full, don't insist */ |
| 603 | if (ret < max) |
| 604 | break; |
| 605 | |
Willy Tarreau | 6996e15 | 2007-04-30 14:37:43 +0200 | [diff] [blame] | 606 | if (--write_poll <= 0) |
| 607 | break; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 608 | } |
Willy Tarreau | 6996e15 | 2007-04-30 14:37:43 +0200 | [diff] [blame] | 609 | else if (ret == 0 || errno == EAGAIN) { |
Willy Tarreau | 0c2fc1f | 2009-01-18 15:30:37 +0100 | [diff] [blame] | 610 | /* nothing written, we need to poll for write first */ |
Willy Tarreau | 8374918 | 2007-04-15 20:56:27 +0200 | [diff] [blame] | 611 | retval = 0; |
| 612 | break; |
| 613 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 614 | else { |
Willy Tarreau | 0c2fc1f | 2009-01-18 15:30:37 +0100 | [diff] [blame] | 615 | /* bad, we got an error */ |
| 616 | retval = -1; |
| 617 | break; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 618 | } |
Willy Tarreau | 6996e15 | 2007-04-30 14:37:43 +0200 | [diff] [blame] | 619 | } /* while (1) */ |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 620 | |
Willy Tarreau | 0c2fc1f | 2009-01-18 15:30:37 +0100 | [diff] [blame] | 621 | return retval; |
| 622 | } |
Willy Tarreau | 6996e15 | 2007-04-30 14:37:43 +0200 | [diff] [blame] | 623 | |
Willy Tarreau | 0c2fc1f | 2009-01-18 15:30:37 +0100 | [diff] [blame] | 624 | |
| 625 | /* |
| 626 | * This function is called on a write event from a stream socket. |
| 627 | * It returns 0 if the caller needs to poll before calling it again, otherwise |
| 628 | * non-zero. |
| 629 | */ |
Willy Tarreau | 239d718 | 2012-07-23 18:53:03 +0200 | [diff] [blame] | 630 | static int sock_raw_write(struct connection *conn) |
Willy Tarreau | 0c2fc1f | 2009-01-18 15:30:37 +0100 | [diff] [blame] | 631 | { |
Willy Tarreau | 239d718 | 2012-07-23 18:53:03 +0200 | [diff] [blame] | 632 | int fd = conn->t.sock.fd; |
Willy Tarreau | 8018471 | 2012-07-06 14:54:49 +0200 | [diff] [blame] | 633 | struct stream_interface *si = container_of(conn, struct stream_interface, conn); |
Willy Tarreau | 0c2fc1f | 2009-01-18 15:30:37 +0100 | [diff] [blame] | 634 | struct buffer *b = si->ob; |
| 635 | int retval = 1; |
| 636 | |
| 637 | #ifdef DEBUG_FULL |
Willy Tarreau | b277d6e | 2012-05-11 16:59:14 +0200 | [diff] [blame] | 638 | fprintf(stderr,"sock_raw_write : fd=%d, owner=%p\n", fd, fdtab[fd].owner); |
Willy Tarreau | 0c2fc1f | 2009-01-18 15:30:37 +0100 | [diff] [blame] | 639 | #endif |
| 640 | |
Willy Tarreau | 8018471 | 2012-07-06 14:54:49 +0200 | [diff] [blame] | 641 | if (conn->flags & CO_FL_ERROR) |
Willy Tarreau | 0c2fc1f | 2009-01-18 15:30:37 +0100 | [diff] [blame] | 642 | goto out_error; |
| 643 | |
Willy Tarreau | d06e711 | 2009-03-29 10:18:41 +0200 | [diff] [blame] | 644 | /* we might have been called just after an asynchronous shutw */ |
| 645 | if (b->flags & BF_SHUTW) |
| 646 | goto out_wakeup; |
| 647 | |
Willy Tarreau | eeda90e | 2012-05-11 19:53:32 +0200 | [diff] [blame] | 648 | retval = sock_raw_write_loop(si, b); |
| 649 | if (retval < 0) |
| 650 | goto out_error; |
Willy Tarreau | 0c2fc1f | 2009-01-18 15:30:37 +0100 | [diff] [blame] | 651 | |
Willy Tarreau | fd31e53 | 2012-07-23 18:24:25 +0200 | [diff] [blame] | 652 | out_wakeup: |
Willy Tarreau | 0c2fc1f | 2009-01-18 15:30:37 +0100 | [diff] [blame] | 653 | return retval; |
Willy Tarreau | ac128fe | 2009-01-09 13:05:19 +0100 | [diff] [blame] | 654 | |
Willy Tarreau | 6996e15 | 2007-04-30 14:37:43 +0200 | [diff] [blame] | 655 | out_error: |
Willy Tarreau | cff6411 | 2008-11-03 06:26:53 +0100 | [diff] [blame] | 656 | /* Write error on the file descriptor. We mark the FD as STERROR so |
| 657 | * that we don't use it anymore. The error is reported to the stream |
| 658 | * interface which will take proper action. We must not perturbate the |
| 659 | * buffer because the stream interface wants to ensure transparent |
| 660 | * connection retries. |
Willy Tarreau | 6996e15 | 2007-04-30 14:37:43 +0200 | [diff] [blame] | 661 | */ |
Willy Tarreau | cff6411 | 2008-11-03 06:26:53 +0100 | [diff] [blame] | 662 | |
Willy Tarreau | 8018471 | 2012-07-06 14:54:49 +0200 | [diff] [blame] | 663 | conn->flags |= CO_FL_ERROR; |
Willy Tarreau | 1714e0f | 2009-03-28 20:54:53 +0100 | [diff] [blame] | 664 | EV_FD_REM(fd); |
Willy Tarreau | e5ed406 | 2008-08-30 03:17:31 +0200 | [diff] [blame] | 665 | return 1; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 666 | } |
| 667 | |
Willy Tarreau | 48adac5 | 2008-08-30 04:58:38 +0200 | [diff] [blame] | 668 | /* |
Willy Tarreau | 3c6ab2e | 2008-09-04 11:19:41 +0200 | [diff] [blame] | 669 | * This function performs a shutdown-write on a stream interface in a connected or |
| 670 | * init state (it does nothing for other states). It either shuts the write side |
Willy Tarreau | 99126c3 | 2008-11-27 10:30:51 +0100 | [diff] [blame] | 671 | * or closes the file descriptor and marks itself as closed. The buffer flags are |
Willy Tarreau | 7340ca5 | 2010-01-16 10:03:45 +0100 | [diff] [blame] | 672 | * updated to reflect the new state. It does also close everything is the SI was |
| 673 | * marked as being in error state. |
Willy Tarreau | 48adac5 | 2008-08-30 04:58:38 +0200 | [diff] [blame] | 674 | */ |
Willy Tarreau | b277d6e | 2012-05-11 16:59:14 +0200 | [diff] [blame] | 675 | static void sock_raw_shutw(struct stream_interface *si) |
Willy Tarreau | 48adac5 | 2008-08-30 04:58:38 +0200 | [diff] [blame] | 676 | { |
Willy Tarreau | 418fd47 | 2009-09-06 21:37:23 +0200 | [diff] [blame] | 677 | si->ob->flags &= ~BF_SHUTW_NOW; |
Willy Tarreau | 99126c3 | 2008-11-27 10:30:51 +0100 | [diff] [blame] | 678 | if (si->ob->flags & BF_SHUTW) |
| 679 | return; |
| 680 | si->ob->flags |= BF_SHUTW; |
| 681 | si->ob->wex = TICK_ETERNITY; |
Willy Tarreau | b0ef735 | 2008-12-14 13:26:20 +0100 | [diff] [blame] | 682 | si->flags &= ~SI_FL_WAIT_DATA; |
Willy Tarreau | 99126c3 | 2008-11-27 10:30:51 +0100 | [diff] [blame] | 683 | |
Willy Tarreau | b38903c | 2008-11-23 21:33:29 +0100 | [diff] [blame] | 684 | switch (si->state) { |
Willy Tarreau | b38903c | 2008-11-23 21:33:29 +0100 | [diff] [blame] | 685 | case SI_ST_EST: |
Willy Tarreau | 720058c | 2009-07-14 19:21:50 +0200 | [diff] [blame] | 686 | /* we have to shut before closing, otherwise some short messages |
| 687 | * may never leave the system, especially when there are remaining |
| 688 | * unread data in the socket input buffer, or when nolinger is set. |
Willy Tarreau | 4c283dc | 2009-12-29 14:36:34 +0100 | [diff] [blame] | 689 | * However, if SI_FL_NOLINGER is explicitly set, we know there is |
| 690 | * no risk so we close both sides immediately. |
Willy Tarreau | 720058c | 2009-07-14 19:21:50 +0200 | [diff] [blame] | 691 | */ |
Willy Tarreau | 7340ca5 | 2010-01-16 10:03:45 +0100 | [diff] [blame] | 692 | if (si->flags & SI_FL_ERR) { |
| 693 | /* quick close, the socket is already shut. Remove pending flags. */ |
| 694 | si->flags &= ~SI_FL_NOLINGER; |
Willy Tarreau | 7bb68ab | 2012-05-13 14:48:59 +0200 | [diff] [blame] | 695 | } |
| 696 | else if (si->flags & SI_FL_NOLINGER) { |
Willy Tarreau | 4c283dc | 2009-12-29 14:36:34 +0100 | [diff] [blame] | 697 | si->flags &= ~SI_FL_NOLINGER; |
Willy Tarreau | fb7508a | 2012-05-21 16:47:54 +0200 | [diff] [blame] | 698 | setsockopt(si_fd(si), SOL_SOCKET, SO_LINGER, |
Willy Tarreau | 4c283dc | 2009-12-29 14:36:34 +0100 | [diff] [blame] | 699 | (struct linger *) &nolinger, sizeof(struct linger)); |
Willy Tarreau | 7bb68ab | 2012-05-13 14:48:59 +0200 | [diff] [blame] | 700 | } |
| 701 | else if (!(si->flags & SI_FL_NOHALF)) { |
Willy Tarreau | fb7508a | 2012-05-21 16:47:54 +0200 | [diff] [blame] | 702 | EV_FD_CLR(si_fd(si), DIR_WR); |
| 703 | shutdown(si_fd(si), SHUT_WR); |
Willy Tarreau | 720058c | 2009-07-14 19:21:50 +0200 | [diff] [blame] | 704 | |
Willy Tarreau | 4c283dc | 2009-12-29 14:36:34 +0100 | [diff] [blame] | 705 | if (!(si->ib->flags & (BF_SHUTR|BF_DONT_READ))) |
| 706 | return; |
| 707 | } |
Willy Tarreau | 5d707e1 | 2009-06-28 11:09:07 +0200 | [diff] [blame] | 708 | |
Willy Tarreau | b38903c | 2008-11-23 21:33:29 +0100 | [diff] [blame] | 709 | /* fall through */ |
| 710 | case SI_ST_CON: |
Willy Tarreau | 8bfa426 | 2008-11-27 09:25:45 +0100 | [diff] [blame] | 711 | /* we may have to close a pending connection, and mark the |
| 712 | * response buffer as shutr |
| 713 | */ |
Willy Tarreau | 8b11708 | 2012-08-06 15:06:49 +0200 | [diff] [blame^] | 714 | conn_data_close(&si->conn); |
Willy Tarreau | fb7508a | 2012-05-21 16:47:54 +0200 | [diff] [blame] | 715 | fd_delete(si_fd(si)); |
Willy Tarreau | fe3718a | 2008-11-30 18:14:12 +0100 | [diff] [blame] | 716 | /* fall through */ |
| 717 | case SI_ST_CER: |
Willy Tarreau | 32d3ee9 | 2010-12-29 14:03:02 +0100 | [diff] [blame] | 718 | case SI_ST_QUE: |
| 719 | case SI_ST_TAR: |
Willy Tarreau | 7f00651 | 2008-12-07 14:04:04 +0100 | [diff] [blame] | 720 | si->state = SI_ST_DIS; |
Willy Tarreau | ad4cd58 | 2012-03-10 13:42:32 +0100 | [diff] [blame] | 721 | |
| 722 | if (si->release) |
| 723 | si->release(si); |
Willy Tarreau | 7f00651 | 2008-12-07 14:04:04 +0100 | [diff] [blame] | 724 | default: |
Willy Tarreau | d06e711 | 2009-03-29 10:18:41 +0200 | [diff] [blame] | 725 | si->flags &= ~SI_FL_WAIT_ROOM; |
Willy Tarreau | 99126c3 | 2008-11-27 10:30:51 +0100 | [diff] [blame] | 726 | si->ib->flags |= BF_SHUTR; |
Willy Tarreau | fe3718a | 2008-11-30 18:14:12 +0100 | [diff] [blame] | 727 | si->ib->rex = TICK_ETERNITY; |
Willy Tarreau | 127334e | 2009-03-28 10:47:26 +0100 | [diff] [blame] | 728 | si->exp = TICK_ETERNITY; |
Willy Tarreau | 48adac5 | 2008-08-30 04:58:38 +0200 | [diff] [blame] | 729 | } |
Willy Tarreau | 48adac5 | 2008-08-30 04:58:38 +0200 | [diff] [blame] | 730 | } |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 731 | |
Willy Tarreau | 2d21279 | 2008-08-27 21:41:35 +0200 | [diff] [blame] | 732 | /* |
Willy Tarreau | 3c6ab2e | 2008-09-04 11:19:41 +0200 | [diff] [blame] | 733 | * This function performs a shutdown-read on a stream interface in a connected or |
Willy Tarreau | 0a5d5dd | 2008-11-23 19:31:35 +0100 | [diff] [blame] | 734 | * init state (it does nothing for other states). It either shuts the read side |
Willy Tarreau | 99126c3 | 2008-11-27 10:30:51 +0100 | [diff] [blame] | 735 | * or closes the file descriptor and marks itself as closed. The buffer flags are |
Willy Tarreau | 7bb68ab | 2012-05-13 14:48:59 +0200 | [diff] [blame] | 736 | * updated to reflect the new state. If the stream interface has SI_FL_NOHALF, |
| 737 | * we also forward the close to the write side. |
Willy Tarreau | 3c6ab2e | 2008-09-04 11:19:41 +0200 | [diff] [blame] | 738 | */ |
Willy Tarreau | b277d6e | 2012-05-11 16:59:14 +0200 | [diff] [blame] | 739 | static void sock_raw_shutr(struct stream_interface *si) |
Willy Tarreau | 3c6ab2e | 2008-09-04 11:19:41 +0200 | [diff] [blame] | 740 | { |
Willy Tarreau | 418fd47 | 2009-09-06 21:37:23 +0200 | [diff] [blame] | 741 | si->ib->flags &= ~BF_SHUTR_NOW; |
Willy Tarreau | 99126c3 | 2008-11-27 10:30:51 +0100 | [diff] [blame] | 742 | if (si->ib->flags & BF_SHUTR) |
| 743 | return; |
| 744 | si->ib->flags |= BF_SHUTR; |
| 745 | si->ib->rex = TICK_ETERNITY; |
Willy Tarreau | b0ef735 | 2008-12-14 13:26:20 +0100 | [diff] [blame] | 746 | si->flags &= ~SI_FL_WAIT_ROOM; |
Willy Tarreau | 99126c3 | 2008-11-27 10:30:51 +0100 | [diff] [blame] | 747 | |
Willy Tarreau | 8bfa426 | 2008-11-27 09:25:45 +0100 | [diff] [blame] | 748 | if (si->state != SI_ST_EST && si->state != SI_ST_CON) |
Willy Tarreau | 0a5d5dd | 2008-11-23 19:31:35 +0100 | [diff] [blame] | 749 | return; |
Willy Tarreau | 3c6ab2e | 2008-09-04 11:19:41 +0200 | [diff] [blame] | 750 | |
Willy Tarreau | cff6411 | 2008-11-03 06:26:53 +0100 | [diff] [blame] | 751 | if (si->ob->flags & BF_SHUTW) { |
Willy Tarreau | 8b11708 | 2012-08-06 15:06:49 +0200 | [diff] [blame^] | 752 | conn_data_close(&si->conn); |
Willy Tarreau | fb7508a | 2012-05-21 16:47:54 +0200 | [diff] [blame] | 753 | fd_delete(si_fd(si)); |
Willy Tarreau | 74ab2ac | 2008-11-23 17:23:07 +0100 | [diff] [blame] | 754 | si->state = SI_ST_DIS; |
Willy Tarreau | 127334e | 2009-03-28 10:47:26 +0100 | [diff] [blame] | 755 | si->exp = TICK_ETERNITY; |
Willy Tarreau | 0bd05ea | 2010-07-02 11:18:03 +0200 | [diff] [blame] | 756 | |
| 757 | if (si->release) |
| 758 | si->release(si); |
Willy Tarreau | 0a5d5dd | 2008-11-23 19:31:35 +0100 | [diff] [blame] | 759 | return; |
Willy Tarreau | 3c6ab2e | 2008-09-04 11:19:41 +0200 | [diff] [blame] | 760 | } |
Willy Tarreau | 7bb68ab | 2012-05-13 14:48:59 +0200 | [diff] [blame] | 761 | else if (si->flags & SI_FL_NOHALF) { |
| 762 | /* we want to immediately forward this close to the write side */ |
| 763 | return sock_raw_shutw(si); |
| 764 | } |
Willy Tarreau | fb7508a | 2012-05-21 16:47:54 +0200 | [diff] [blame] | 765 | EV_FD_CLR(si_fd(si), DIR_RD); |
Willy Tarreau | 0a5d5dd | 2008-11-23 19:31:35 +0100 | [diff] [blame] | 766 | return; |
Willy Tarreau | 3c6ab2e | 2008-09-04 11:19:41 +0200 | [diff] [blame] | 767 | } |
| 768 | |
| 769 | /* |
Willy Tarreau | b277d6e | 2012-05-11 16:59:14 +0200 | [diff] [blame] | 770 | * Updates a connected sock_raw file descriptor status and timeouts |
Willy Tarreau | 3a16b2c | 2008-08-28 08:54:27 +0200 | [diff] [blame] | 771 | * according to the buffers' flags. It should only be called once after the |
| 772 | * buffer flags have settled down, and before they are cleared. It doesn't |
| 773 | * harm to call it as often as desired (it just slightly hurts performance). |
| 774 | */ |
Willy Tarreau | b277d6e | 2012-05-11 16:59:14 +0200 | [diff] [blame] | 775 | static void sock_raw_data_finish(struct stream_interface *si) |
Willy Tarreau | 3a16b2c | 2008-08-28 08:54:27 +0200 | [diff] [blame] | 776 | { |
Willy Tarreau | b025325 | 2008-11-30 21:37:12 +0100 | [diff] [blame] | 777 | struct buffer *ib = si->ib; |
| 778 | struct buffer *ob = si->ob; |
Willy Tarreau | fb7508a | 2012-05-21 16:47:54 +0200 | [diff] [blame] | 779 | int fd = si_fd(si); |
Willy Tarreau | 3a16b2c | 2008-08-28 08:54:27 +0200 | [diff] [blame] | 780 | |
Willy Tarreau | 02d6cfc | 2012-03-01 18:19:58 +0100 | [diff] [blame] | 781 | DPRINTF(stderr,"[%u] %s: fd=%d owner=%p ib=%p, ob=%p, exp(r,w)=%u,%u ibf=%08x obf=%08x ibh=%d ibt=%d obh=%d obd=%d si=%d\n", |
Willy Tarreau | 3a16b2c | 2008-08-28 08:54:27 +0200 | [diff] [blame] | 782 | now_ms, __FUNCTION__, |
| 783 | fd, fdtab[fd].owner, |
| 784 | ib, ob, |
| 785 | ib->rex, ob->wex, |
| 786 | ib->flags, ob->flags, |
Willy Tarreau | 02d6cfc | 2012-03-01 18:19:58 +0100 | [diff] [blame] | 787 | ib->i, ib->o, ob->i, ob->o, si->state); |
Willy Tarreau | 3a16b2c | 2008-08-28 08:54:27 +0200 | [diff] [blame] | 788 | |
| 789 | /* Check if we need to close the read side */ |
| 790 | if (!(ib->flags & BF_SHUTR)) { |
Willy Tarreau | 2d21279 | 2008-08-27 21:41:35 +0200 | [diff] [blame] | 791 | /* Read not closed, update FD status and timeout for reads */ |
Willy Tarreau | f1ba4b3 | 2009-10-17 14:37:52 +0200 | [diff] [blame] | 792 | if (ib->flags & (BF_FULL|BF_HIJACK|BF_DONT_READ)) { |
Willy Tarreau | 2d21279 | 2008-08-27 21:41:35 +0200 | [diff] [blame] | 793 | /* stop reading */ |
Willy Tarreau | 11f4940 | 2010-11-11 23:08:17 +0100 | [diff] [blame] | 794 | if (!(si->flags & SI_FL_WAIT_ROOM)) { |
| 795 | if ((ib->flags & (BF_FULL|BF_HIJACK|BF_DONT_READ)) == BF_FULL) |
| 796 | si->flags |= SI_FL_WAIT_ROOM; |
Willy Tarreau | 3788e4c | 2012-07-30 14:29:35 +0200 | [diff] [blame] | 797 | EV_FD_CLR(fd, DIR_RD); |
Willy Tarreau | 11f4940 | 2010-11-11 23:08:17 +0100 | [diff] [blame] | 798 | ib->rex = TICK_ETERNITY; |
| 799 | } |
Willy Tarreau | 2d21279 | 2008-08-27 21:41:35 +0200 | [diff] [blame] | 800 | } |
| 801 | else { |
| 802 | /* (re)start reading and update timeout. Note: we don't recompute the timeout |
| 803 | * everytime we get here, otherwise it would risk never to expire. We only |
Willy Tarreau | fe8903c | 2009-10-04 10:56:08 +0200 | [diff] [blame] | 804 | * update it if is was not yet set. The stream socket handler will already |
| 805 | * have updated it if there has been a completed I/O. |
Willy Tarreau | 2d21279 | 2008-08-27 21:41:35 +0200 | [diff] [blame] | 806 | */ |
Willy Tarreau | b0ef735 | 2008-12-14 13:26:20 +0100 | [diff] [blame] | 807 | si->flags &= ~SI_FL_WAIT_ROOM; |
Willy Tarreau | 3788e4c | 2012-07-30 14:29:35 +0200 | [diff] [blame] | 808 | EV_FD_SET(fd, DIR_RD); |
Willy Tarreau | f1ba4b3 | 2009-10-17 14:37:52 +0200 | [diff] [blame] | 809 | if (!(ib->flags & (BF_READ_NOEXP|BF_DONT_READ)) && !tick_isset(ib->rex)) |
Willy Tarreau | 2d21279 | 2008-08-27 21:41:35 +0200 | [diff] [blame] | 810 | ib->rex = tick_add_ifset(now_ms, ib->rto); |
| 811 | } |
| 812 | } |
| 813 | |
| 814 | /* Check if we need to close the write side */ |
| 815 | if (!(ob->flags & BF_SHUTW)) { |
Willy Tarreau | 2d21279 | 2008-08-27 21:41:35 +0200 | [diff] [blame] | 816 | /* Write not closed, update FD status and timeout for writes */ |
Willy Tarreau | ba0b63d | 2009-09-20 08:09:44 +0200 | [diff] [blame] | 817 | if (ob->flags & BF_OUT_EMPTY) { |
Willy Tarreau | 2d21279 | 2008-08-27 21:41:35 +0200 | [diff] [blame] | 818 | /* stop writing */ |
Willy Tarreau | 11f4940 | 2010-11-11 23:08:17 +0100 | [diff] [blame] | 819 | if (!(si->flags & SI_FL_WAIT_DATA)) { |
| 820 | if ((ob->flags & (BF_FULL|BF_HIJACK|BF_SHUTW_NOW)) == 0) |
| 821 | si->flags |= SI_FL_WAIT_DATA; |
Willy Tarreau | 3788e4c | 2012-07-30 14:29:35 +0200 | [diff] [blame] | 822 | EV_FD_CLR(fd, DIR_WR); |
Willy Tarreau | 11f4940 | 2010-11-11 23:08:17 +0100 | [diff] [blame] | 823 | ob->wex = TICK_ETERNITY; |
| 824 | } |
Willy Tarreau | 2d21279 | 2008-08-27 21:41:35 +0200 | [diff] [blame] | 825 | } |
| 826 | else { |
| 827 | /* (re)start writing and update timeout. Note: we don't recompute the timeout |
| 828 | * everytime we get here, otherwise it would risk never to expire. We only |
Willy Tarreau | fe8903c | 2009-10-04 10:56:08 +0200 | [diff] [blame] | 829 | * update it if is was not yet set. The stream socket handler will already |
| 830 | * have updated it if there has been a completed I/O. |
Willy Tarreau | 2d21279 | 2008-08-27 21:41:35 +0200 | [diff] [blame] | 831 | */ |
Willy Tarreau | b0ef735 | 2008-12-14 13:26:20 +0100 | [diff] [blame] | 832 | si->flags &= ~SI_FL_WAIT_DATA; |
Willy Tarreau | 3788e4c | 2012-07-30 14:29:35 +0200 | [diff] [blame] | 833 | EV_FD_SET(fd, DIR_WR); |
Willy Tarreau | fe8903c | 2009-10-04 10:56:08 +0200 | [diff] [blame] | 834 | if (!tick_isset(ob->wex)) { |
Willy Tarreau | 2d21279 | 2008-08-27 21:41:35 +0200 | [diff] [blame] | 835 | ob->wex = tick_add_ifset(now_ms, ob->wto); |
Willy Tarreau | f27b5ea | 2009-10-03 22:01:18 +0200 | [diff] [blame] | 836 | if (tick_isset(ib->rex) && !(si->flags & SI_FL_INDEP_STR)) { |
Willy Tarreau | 2d21279 | 2008-08-27 21:41:35 +0200 | [diff] [blame] | 837 | /* Note: depending on the protocol, we don't know if we're waiting |
| 838 | * for incoming data or not. So in order to prevent the socket from |
| 839 | * expiring read timeouts during writes, we refresh the read timeout, |
Willy Tarreau | f27b5ea | 2009-10-03 22:01:18 +0200 | [diff] [blame] | 840 | * except if it was already infinite or if we have explicitly setup |
Jamie Gloudon | 801a0a3 | 2012-08-25 00:18:33 -0400 | [diff] [blame] | 841 | * independent streams. |
Willy Tarreau | 2d21279 | 2008-08-27 21:41:35 +0200 | [diff] [blame] | 842 | */ |
Willy Tarreau | d06e711 | 2009-03-29 10:18:41 +0200 | [diff] [blame] | 843 | ib->rex = tick_add_ifset(now_ms, ib->rto); |
Willy Tarreau | 2d21279 | 2008-08-27 21:41:35 +0200 | [diff] [blame] | 844 | } |
| 845 | } |
| 846 | } |
| 847 | } |
Willy Tarreau | 2d21279 | 2008-08-27 21:41:35 +0200 | [diff] [blame] | 848 | } |
| 849 | |
Willy Tarreau | 3ffeba1 | 2008-12-14 14:42:35 +0100 | [diff] [blame] | 850 | /* This function is used for inter-stream-interface calls. It is called by the |
| 851 | * consumer to inform the producer side that it may be interested in checking |
| 852 | * for free space in the buffer. Note that it intentionally does not update |
| 853 | * timeouts, so that we can still check them later at wake-up. |
| 854 | */ |
Willy Tarreau | b277d6e | 2012-05-11 16:59:14 +0200 | [diff] [blame] | 855 | static void sock_raw_chk_rcv(struct stream_interface *si) |
Willy Tarreau | 3ffeba1 | 2008-12-14 14:42:35 +0100 | [diff] [blame] | 856 | { |
| 857 | struct buffer *ib = si->ib; |
| 858 | |
Willy Tarreau | 02d6cfc | 2012-03-01 18:19:58 +0100 | [diff] [blame] | 859 | DPRINTF(stderr,"[%u] %s: fd=%d owner=%p ib=%p, ob=%p, exp(r,w)=%u,%u ibf=%08x obf=%08x ibh=%d ibt=%d obh=%d obd=%d si=%d\n", |
Willy Tarreau | 3ffeba1 | 2008-12-14 14:42:35 +0100 | [diff] [blame] | 860 | now_ms, __FUNCTION__, |
Willy Tarreau | fb7508a | 2012-05-21 16:47:54 +0200 | [diff] [blame] | 861 | si_fd(si), fdtab[si_fd(si)].owner, |
Vincenzo Farruggia | 9b97cff | 2009-01-30 16:49:10 +0000 | [diff] [blame] | 862 | ib, si->ob, |
| 863 | ib->rex, si->ob->wex, |
| 864 | ib->flags, si->ob->flags, |
Willy Tarreau | 02d6cfc | 2012-03-01 18:19:58 +0100 | [diff] [blame] | 865 | ib->i, ib->o, si->ob->i, si->ob->o, si->state); |
Willy Tarreau | 3ffeba1 | 2008-12-14 14:42:35 +0100 | [diff] [blame] | 866 | |
| 867 | if (unlikely(si->state != SI_ST_EST || (ib->flags & BF_SHUTR))) |
| 868 | return; |
| 869 | |
Willy Tarreau | f1ba4b3 | 2009-10-17 14:37:52 +0200 | [diff] [blame] | 870 | if (ib->flags & (BF_FULL|BF_HIJACK|BF_DONT_READ)) { |
Willy Tarreau | 3ffeba1 | 2008-12-14 14:42:35 +0100 | [diff] [blame] | 871 | /* stop reading */ |
Willy Tarreau | f1ba4b3 | 2009-10-17 14:37:52 +0200 | [diff] [blame] | 872 | if ((ib->flags & (BF_FULL|BF_HIJACK|BF_DONT_READ)) == BF_FULL) |
Willy Tarreau | 3ffeba1 | 2008-12-14 14:42:35 +0100 | [diff] [blame] | 873 | si->flags |= SI_FL_WAIT_ROOM; |
Willy Tarreau | 3788e4c | 2012-07-30 14:29:35 +0200 | [diff] [blame] | 874 | EV_FD_CLR(si_fd(si), DIR_RD); |
Willy Tarreau | 3ffeba1 | 2008-12-14 14:42:35 +0100 | [diff] [blame] | 875 | } |
| 876 | else { |
| 877 | /* (re)start reading */ |
| 878 | si->flags &= ~SI_FL_WAIT_ROOM; |
Willy Tarreau | 3788e4c | 2012-07-30 14:29:35 +0200 | [diff] [blame] | 879 | EV_FD_SET(si_fd(si), DIR_RD); |
Willy Tarreau | 3ffeba1 | 2008-12-14 14:42:35 +0100 | [diff] [blame] | 880 | } |
| 881 | } |
| 882 | |
| 883 | |
| 884 | /* This function is used for inter-stream-interface calls. It is called by the |
| 885 | * producer to inform the consumer side that it may be interested in checking |
| 886 | * for data in the buffer. Note that it intentionally does not update timeouts, |
| 887 | * so that we can still check them later at wake-up. |
| 888 | */ |
Willy Tarreau | b277d6e | 2012-05-11 16:59:14 +0200 | [diff] [blame] | 889 | static void sock_raw_chk_snd(struct stream_interface *si) |
Willy Tarreau | 3ffeba1 | 2008-12-14 14:42:35 +0100 | [diff] [blame] | 890 | { |
| 891 | struct buffer *ob = si->ob; |
Willy Tarreau | a456f2a | 2009-01-18 17:38:44 +0100 | [diff] [blame] | 892 | int retval; |
Willy Tarreau | 3ffeba1 | 2008-12-14 14:42:35 +0100 | [diff] [blame] | 893 | |
Willy Tarreau | 02d6cfc | 2012-03-01 18:19:58 +0100 | [diff] [blame] | 894 | DPRINTF(stderr,"[%u] %s: fd=%d owner=%p ib=%p, ob=%p, exp(r,w)=%u,%u ibf=%08x obf=%08x ibh=%d ibt=%d obh=%d obd=%d si=%d\n", |
Willy Tarreau | 3ffeba1 | 2008-12-14 14:42:35 +0100 | [diff] [blame] | 895 | now_ms, __FUNCTION__, |
Willy Tarreau | fb7508a | 2012-05-21 16:47:54 +0200 | [diff] [blame] | 896 | si_fd(si), fdtab[si_fd(si)].owner, |
Vincenzo Farruggia | 9b97cff | 2009-01-30 16:49:10 +0000 | [diff] [blame] | 897 | si->ib, ob, |
| 898 | si->ib->rex, ob->wex, |
| 899 | si->ib->flags, ob->flags, |
Willy Tarreau | 02d6cfc | 2012-03-01 18:19:58 +0100 | [diff] [blame] | 900 | si->ib->i, si->ib->o, ob->i, ob->o, si->state); |
Willy Tarreau | 3ffeba1 | 2008-12-14 14:42:35 +0100 | [diff] [blame] | 901 | |
| 902 | if (unlikely(si->state != SI_ST_EST || (ob->flags & BF_SHUTW))) |
| 903 | return; |
| 904 | |
Willy Tarreau | a190d59 | 2012-05-20 18:35:19 +0200 | [diff] [blame] | 905 | if (unlikely(ob->flags & BF_OUT_EMPTY)) /* called with nothing to send ! */ |
Willy Tarreau | eb9fd51 | 2011-12-11 22:11:47 +0100 | [diff] [blame] | 906 | return; |
| 907 | |
| 908 | if (!ob->pipe && /* spliced data wants to be forwarded ASAP */ |
| 909 | (!(si->flags & SI_FL_WAIT_DATA) || /* not waiting for data */ |
Willy Tarreau | fb7508a | 2012-05-21 16:47:54 +0200 | [diff] [blame] | 910 | (fdtab[si_fd(si)].ev & FD_POLL_OUT))) /* we'll be called anyway */ |
Willy Tarreau | a456f2a | 2009-01-18 17:38:44 +0100 | [diff] [blame] | 911 | return; |
| 912 | |
Willy Tarreau | b277d6e | 2012-05-11 16:59:14 +0200 | [diff] [blame] | 913 | retval = sock_raw_write_loop(si, ob); |
Willy Tarreau | c54aef3 | 2009-07-27 20:08:06 +0200 | [diff] [blame] | 914 | /* here, we have : |
| 915 | * retval < 0 if an error was encountered during write. |
| 916 | * retval = 0 if we can't write anymore without polling |
| 917 | * retval = 1 if we're invited to come back when desired |
| 918 | */ |
Willy Tarreau | a456f2a | 2009-01-18 17:38:44 +0100 | [diff] [blame] | 919 | if (retval < 0) { |
| 920 | /* Write error on the file descriptor. We mark the FD as STERROR so |
| 921 | * that we don't use it anymore and we notify the task. |
| 922 | */ |
Willy Tarreau | 505e34a | 2012-07-06 10:17:53 +0200 | [diff] [blame] | 923 | si->conn.flags |= CO_FL_ERROR; |
Willy Tarreau | fb7508a | 2012-05-21 16:47:54 +0200 | [diff] [blame] | 924 | fdtab[si_fd(si)].ev &= ~FD_POLL_STICKY; |
| 925 | EV_FD_REM(si_fd(si)); |
Willy Tarreau | a456f2a | 2009-01-18 17:38:44 +0100 | [diff] [blame] | 926 | si->flags |= SI_FL_ERR; |
| 927 | goto out_wakeup; |
| 928 | } |
| 929 | |
Willy Tarreau | c54aef3 | 2009-07-27 20:08:06 +0200 | [diff] [blame] | 930 | /* OK, so now we know that retval >= 0 means that some data might have |
| 931 | * been sent, and that we may have to poll first. We have to do that |
| 932 | * too if the buffer is not empty. |
| 933 | */ |
Willy Tarreau | ba0b63d | 2009-09-20 08:09:44 +0200 | [diff] [blame] | 934 | if (ob->flags & BF_OUT_EMPTY) { |
Willy Tarreau | a456f2a | 2009-01-18 17:38:44 +0100 | [diff] [blame] | 935 | /* the connection is established but we can't write. Either the |
| 936 | * buffer is empty, or we just refrain from sending because the |
Willy Tarreau | 2e046c6 | 2012-03-01 16:08:30 +0100 | [diff] [blame] | 937 | * ->o limit was reached. Maybe we just wrote the last |
Willy Tarreau | a456f2a | 2009-01-18 17:38:44 +0100 | [diff] [blame] | 938 | * chunk and need to close. |
| 939 | */ |
Willy Tarreau | 520d95e | 2009-09-19 21:04:57 +0200 | [diff] [blame] | 940 | if (((ob->flags & (BF_SHUTW|BF_HIJACK|BF_AUTO_CLOSE|BF_SHUTW_NOW)) == |
| 941 | (BF_AUTO_CLOSE|BF_SHUTW_NOW)) && |
Willy Tarreau | a456f2a | 2009-01-18 17:38:44 +0100 | [diff] [blame] | 942 | (si->state == SI_ST_EST)) { |
Willy Tarreau | b277d6e | 2012-05-11 16:59:14 +0200 | [diff] [blame] | 943 | sock_raw_shutw(si); |
Willy Tarreau | a456f2a | 2009-01-18 17:38:44 +0100 | [diff] [blame] | 944 | goto out_wakeup; |
| 945 | } |
Willy Tarreau | d06e711 | 2009-03-29 10:18:41 +0200 | [diff] [blame] | 946 | |
Willy Tarreau | 59454bf | 2009-09-20 11:13:40 +0200 | [diff] [blame] | 947 | if ((ob->flags & (BF_SHUTW|BF_SHUTW_NOW|BF_FULL|BF_HIJACK)) == 0) |
Willy Tarreau | 3ffeba1 | 2008-12-14 14:42:35 +0100 | [diff] [blame] | 948 | si->flags |= SI_FL_WAIT_DATA; |
Willy Tarreau | a456f2a | 2009-01-18 17:38:44 +0100 | [diff] [blame] | 949 | ob->wex = TICK_ETERNITY; |
Willy Tarreau | 3ffeba1 | 2008-12-14 14:42:35 +0100 | [diff] [blame] | 950 | } |
| 951 | else { |
Willy Tarreau | c54aef3 | 2009-07-27 20:08:06 +0200 | [diff] [blame] | 952 | /* Otherwise there are remaining data to be sent in the buffer, |
| 953 | * which means we have to poll before doing so. |
| 954 | */ |
Willy Tarreau | 3788e4c | 2012-07-30 14:29:35 +0200 | [diff] [blame] | 955 | EV_FD_SET(si_fd(si), DIR_WR); |
Willy Tarreau | c54aef3 | 2009-07-27 20:08:06 +0200 | [diff] [blame] | 956 | si->flags &= ~SI_FL_WAIT_DATA; |
| 957 | if (!tick_isset(ob->wex)) |
| 958 | ob->wex = tick_add_ifset(now_ms, ob->wto); |
Willy Tarreau | 3ffeba1 | 2008-12-14 14:42:35 +0100 | [diff] [blame] | 959 | } |
Willy Tarreau | a456f2a | 2009-01-18 17:38:44 +0100 | [diff] [blame] | 960 | |
Willy Tarreau | c961946 | 2009-03-09 22:40:57 +0100 | [diff] [blame] | 961 | if (likely(ob->flags & BF_WRITE_ACTIVITY)) { |
| 962 | /* update timeout if we have written something */ |
Willy Tarreau | ba0b63d | 2009-09-20 08:09:44 +0200 | [diff] [blame] | 963 | if ((ob->flags & (BF_OUT_EMPTY|BF_SHUTW|BF_WRITE_PARTIAL)) == BF_WRITE_PARTIAL) |
Willy Tarreau | c961946 | 2009-03-09 22:40:57 +0100 | [diff] [blame] | 964 | ob->wex = tick_add_ifset(now_ms, ob->wto); |
| 965 | |
Willy Tarreau | f27b5ea | 2009-10-03 22:01:18 +0200 | [diff] [blame] | 966 | if (tick_isset(si->ib->rex) && !(si->flags & SI_FL_INDEP_STR)) { |
Willy Tarreau | c961946 | 2009-03-09 22:40:57 +0100 | [diff] [blame] | 967 | /* Note: to prevent the client from expiring read timeouts |
Willy Tarreau | f27b5ea | 2009-10-03 22:01:18 +0200 | [diff] [blame] | 968 | * during writes, we refresh it. We only do this if the |
Jamie Gloudon | 801a0a3 | 2012-08-25 00:18:33 -0400 | [diff] [blame] | 969 | * interface is not configured for "independent streams", |
Willy Tarreau | f27b5ea | 2009-10-03 22:01:18 +0200 | [diff] [blame] | 970 | * because for some applications it's better not to do this, |
| 971 | * for instance when continuously exchanging small amounts |
| 972 | * of data which can full the socket buffers long before a |
| 973 | * write timeout is detected. |
Willy Tarreau | c961946 | 2009-03-09 22:40:57 +0100 | [diff] [blame] | 974 | */ |
| 975 | si->ib->rex = tick_add_ifset(now_ms, si->ib->rto); |
| 976 | } |
| 977 | } |
| 978 | |
Willy Tarreau | a456f2a | 2009-01-18 17:38:44 +0100 | [diff] [blame] | 979 | /* in case of special condition (error, shutdown, end of write...), we |
| 980 | * have to notify the task. |
| 981 | */ |
| 982 | if (likely((ob->flags & (BF_WRITE_NULL|BF_WRITE_ERROR|BF_SHUTW)) || |
Willy Tarreau | ba0b63d | 2009-09-20 08:09:44 +0200 | [diff] [blame] | 983 | ((ob->flags & BF_OUT_EMPTY) && !ob->to_forward) || |
Willy Tarreau | a456f2a | 2009-01-18 17:38:44 +0100 | [diff] [blame] | 984 | si->state != SI_ST_EST)) { |
| 985 | out_wakeup: |
Willy Tarreau | 89f7ef2 | 2009-09-05 20:57:35 +0200 | [diff] [blame] | 986 | if (!(si->flags & SI_FL_DONT_WAKE) && si->owner) |
| 987 | task_wakeup(si->owner, TASK_WOKEN_IO); |
Willy Tarreau | a456f2a | 2009-01-18 17:38:44 +0100 | [diff] [blame] | 988 | } |
Willy Tarreau | 3ffeba1 | 2008-12-14 14:42:35 +0100 | [diff] [blame] | 989 | } |
| 990 | |
Willy Tarreau | 5c979a9 | 2012-05-07 17:15:39 +0200 | [diff] [blame] | 991 | /* stream sock operations */ |
Willy Tarreau | b277d6e | 2012-05-11 16:59:14 +0200 | [diff] [blame] | 992 | struct sock_ops sock_raw = { |
| 993 | .update = sock_raw_data_finish, |
| 994 | .shutr = sock_raw_shutr, |
| 995 | .shutw = sock_raw_shutw, |
| 996 | .chk_rcv = sock_raw_chk_rcv, |
| 997 | .chk_snd = sock_raw_chk_snd, |
| 998 | .read = sock_raw_read, |
| 999 | .write = sock_raw_write, |
Willy Tarreau | 2420827 | 2012-05-21 17:28:50 +0200 | [diff] [blame] | 1000 | .close = NULL, |
Willy Tarreau | 5c979a9 | 2012-05-07 17:15:39 +0200 | [diff] [blame] | 1001 | }; |
Willy Tarreau | baaee00 | 2006-06-26 02:48:02 +0200 | [diff] [blame] | 1002 | |
| 1003 | /* |
| 1004 | * Local variables: |
| 1005 | * c-indent-level: 8 |
| 1006 | * c-basic-offset: 8 |
| 1007 | * End: |
| 1008 | */ |