diff options
Diffstat (limited to 'freebsd/sys/kern/uipc_sockbuf.c')
| -rw-r--r-- | freebsd/sys/kern/uipc_sockbuf.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/freebsd/sys/kern/uipc_sockbuf.c b/freebsd/sys/kern/uipc_sockbuf.c index b89abc84..2a0e527d 100644 --- a/freebsd/sys/kern/uipc_sockbuf.c +++ b/freebsd/sys/kern/uipc_sockbuf.c @@ -63,7 +63,7 @@ void (*aio_swake)(struct socket *, struct sockbuf *); u_long sb_max = SB_MAX; u_long sb_max_adj = - SB_MAX * MCLBYTES / (MSIZE + MCLBYTES); /* adjusted sb_max */ + (quad_t)SB_MAX * MCLBYTES / (MSIZE + MCLBYTES); /* adjusted sb_max */ static u_long sb_efficiency = 8; /* parameter for sbreserve() */ @@ -945,6 +945,13 @@ sbsndptr(struct sockbuf *sb, u_int off, u_int len, u_int *moff) /* Return closest mbuf in chain for current offset. */ *moff = off - sb->sb_sndptroff; m = ret = sb->sb_sndptr ? sb->sb_sndptr : sb->sb_mb; + if (*moff == m->m_len) { + *moff = 0; + sb->sb_sndptroff += m->m_len; + m = ret = m->m_next; + KASSERT(ret->m_len > 0, + ("mbuf %p in sockbuf %p chain has no valid data", ret, sb)); + } /* Advance by len to be as close as possible for the next transmit. */ for (off = off - sb->sb_sndptroff + len - 1; |