svn commit: r367148 - head/sys/netinet
John Baldwin
jhb at FreeBSD.org
Thu Oct 29 22:18:57 UTC 2020
Author: jhb
Date: Thu Oct 29 22:18:56 2020
New Revision: 367148
URL: https://svnweb.freebsd.org/changeset/base/367148
Log:
Call m_snd_tag_rele() to free send tags.
Send tags are refcounted and if_snd_tag_free() is called by
m_snd_tag_rele() when the last reference is dropped on a send tag.
Reviewed by: gallatin, hselasky
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D26995
Modified:
head/sys/netinet/in_pcb.c
head/sys/netinet/in_pcb.h
head/sys/netinet/tcp_ratelimit.c
Modified: head/sys/netinet/in_pcb.c
==============================================================================
--- head/sys/netinet/in_pcb.c Thu Oct 29 22:16:59 2020 (r367147)
+++ head/sys/netinet/in_pcb.c Thu Oct 29 22:18:56 2020 (r367148)
@@ -3347,20 +3347,10 @@ in_pcbattach_txrtlmt(struct inpcb *inp, struct ifnet *
}
void
-in_pcbdetach_tag(struct ifnet *ifp, struct m_snd_tag *mst)
+in_pcbdetach_tag(struct m_snd_tag *mst)
{
- if (ifp == NULL)
- return;
- /*
- * If the device was detached while we still had reference(s)
- * on the ifp, we assume if_snd_tag_free() was replaced with
- * stubs.
- */
- ifp->if_snd_tag_free(mst);
-
- /* release reference count on network interface */
- if_rele(ifp);
+ m_snd_tag_rele(mst);
#ifdef INET
counter_u64_add(rate_limit_active, -1);
#endif
Modified: head/sys/netinet/in_pcb.h
==============================================================================
--- head/sys/netinet/in_pcb.h Thu Oct 29 22:16:59 2020 (r367147)
+++ head/sys/netinet/in_pcb.h Thu Oct 29 22:18:56 2020 (r367148)
@@ -884,7 +884,7 @@ in_pcboutput_txrtlmt_locked(struct inpcb *, struct ifn
int in_pcbattach_txrtlmt(struct inpcb *, struct ifnet *, uint32_t, uint32_t,
uint32_t, struct m_snd_tag **);
void in_pcbdetach_txrtlmt(struct inpcb *);
-void in_pcbdetach_tag(struct ifnet *ifp, struct m_snd_tag *mst);
+void in_pcbdetach_tag(struct m_snd_tag *);
int in_pcbmodify_txrtlmt(struct inpcb *, uint32_t);
int in_pcbquery_txrtlmt(struct inpcb *, uint32_t *);
int in_pcbquery_txrlevel(struct inpcb *, uint32_t *);
Modified: head/sys/netinet/tcp_ratelimit.c
==============================================================================
--- head/sys/netinet/tcp_ratelimit.c Thu Oct 29 22:16:59 2020 (r367147)
+++ head/sys/netinet/tcp_ratelimit.c Thu Oct 29 22:18:56 2020 (r367148)
@@ -1028,7 +1028,7 @@ rt_find_real_interface(struct ifnet *ifp, struct inpcb
return (NULL);
}
tifp = tag->ifp;
- tifp->if_snd_tag_free(tag);
+ m_snd_tag_rele(tag);
return (tifp);
}
@@ -1161,7 +1161,6 @@ static void
tcp_rl_ifnet_departure(void *arg __unused, struct ifnet *ifp)
{
struct tcp_rate_set *rs, *nrs;
- struct ifnet *tifp;
int i;
mtx_lock(&rs_mtx);
@@ -1173,8 +1172,7 @@ tcp_rl_ifnet_departure(void *arg __unused, struct ifne
rs->rs_flags |= RS_IS_DEAD;
for (i = 0; i < rs->rs_rate_cnt; i++) {
if (rs->rs_rlt[i].flags & HDWRPACE_TAGPRESENT) {
- tifp = rs->rs_rlt[i].tag->ifp;
- in_pcbdetach_tag(tifp, rs->rs_rlt[i].tag);
+ in_pcbdetach_tag(rs->rs_rlt[i].tag);
rs->rs_rlt[i].tag = NULL;
}
rs->rs_rlt[i].flags = HDWRPACE_IFPDEPARTED;
@@ -1191,7 +1189,6 @@ static void
tcp_rl_shutdown(void *arg __unused, int howto __unused)
{
struct tcp_rate_set *rs, *nrs;
- struct ifnet *tifp;
int i;
mtx_lock(&rs_mtx);
@@ -1201,8 +1198,7 @@ tcp_rl_shutdown(void *arg __unused, int howto __unused
rs->rs_flags |= RS_IS_DEAD;
for (i = 0; i < rs->rs_rate_cnt; i++) {
if (rs->rs_rlt[i].flags & HDWRPACE_TAGPRESENT) {
- tifp = rs->rs_rlt[i].tag->ifp;
- in_pcbdetach_tag(tifp, rs->rs_rlt[i].tag);
+ in_pcbdetach_tag(rs->rs_rlt[i].tag);
rs->rs_rlt[i].tag = NULL;
}
rs->rs_rlt[i].flags = HDWRPACE_IFPDEPARTED;
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