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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2015-04-08 15:37:49 +0200 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2015-05-20 09:58:21 +0200 |
| commit | 165dd8ea1256d71d6a4f52c0a66dcc2799ef8f99 (patch) | |
| tree | c42072a99573d4d7cc03b2263e2c0c6d53f9c691 /freebsd/sys/kern/uipc_sockbuf.c | |
| parent | rtems-bsd-chunk: Include missing header file (diff) | |
| download | rtems-libbsd-165dd8ea1256d71d6a4f52c0a66dcc2799ef8f99.tar.bz2 | |
Update to FreeBSD Stable/9 2015-04-08
Diffstat (limited to 'freebsd/sys/kern/uipc_sockbuf.c')
| -rw-r--r-- | freebsd/sys/kern/uipc_sockbuf.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/freebsd/sys/kern/uipc_sockbuf.c b/freebsd/sys/kern/uipc_sockbuf.c index 03b18b92..bcbd0d9a 100644 --- a/freebsd/sys/kern/uipc_sockbuf.c +++ b/freebsd/sys/kern/uipc_sockbuf.c @@ -995,6 +995,37 @@ sbsndptr(struct sockbuf *sb, u_int off, u_int len, u_int *moff) } /* + * Return the first mbuf and the mbuf data offset for the provided + * send offset without changing the "sb_sndptroff" field. + */ +struct mbuf * +sbsndmbuf(struct sockbuf *sb, u_int off, u_int *moff) +{ + struct mbuf *m; + + KASSERT(sb->sb_mb != NULL, ("%s: sb_mb is NULL", __func__)); + + /* + * If the "off" is below the stored offset, which happens on + * retransmits, just use "sb_mb": + */ + if (sb->sb_sndptr == NULL || sb->sb_sndptroff > off) { + m = sb->sb_mb; + } else { + m = sb->sb_sndptr; + off -= sb->sb_sndptroff; + } + while (off > 0 && m != NULL) { + if (off < m->m_len) + break; + off -= m->m_len; + m = m->m_next; + } + *moff = off; + return (m); +} + +/* * Drop a record off the front of a sockbuf and move the next record to the * front. */ |