MINOR: buffer: introduce b_realign_if_empty()
Many places deal with buffer realignment after data removal. The method
is always the same : if the buffer is empty, set its pointer to the origin.
Let's have a function for this so that we have less code to change with the
new API.
diff --git a/include/common/buf.h b/include/common/buf.h
index 6d1a8c0..564e0eb 100644
--- a/include/common/buf.h
+++ b/include/common/buf.h
@@ -322,6 +322,13 @@
}
}
+/* b_realign_if_empty() : realigns a buffer if it's empty */
+static inline void b_realign_if_empty(struct buffer *b)
+{
+ if (!b_data(b))
+ b->p = b->data;
+}
+
#endif /* _COMMON_BUF_H */