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net80211: move net_epoch into net80211

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Move the net_epoch into net80211 around the if_input calls and out of
the driver (in this first case LinuxKPI).  This reduces coverage but
also allows us to alloc in calls like (*ampdu_rx_start) which do not
actually pass data up the stack.

The follow-up commits will revert b65f813c1a,
21c4082de9,
17c328b6ae,
af2441fbc7,
and 6c3e93cb5a for ath.

Sponsored by:	The FreeBSD Foundation
MFC after:	3 days
Tested by:	few (rtwn, ath, iwlwifi, ...)
Reviewed by:	adrian
Differential Revision: https://reviews.freebsd.org/D42427
This commit is contained in:
Bjoern A. Zeeb 2023-10-29 14:25:23 +00:00
parent 3d44dce90a
commit de607e3c23
3 changed files with 7 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
sys/compat/linuxkpi/common/src/linux_80211.c
View file

@ -4154,7 +4154,6 @@ linuxkpi_ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb,
struct ieee80211_sta *sta, struct napi_struct *napi __unused,
struct list_head *list __unused)
{
struct epoch_tracker et;
struct lkpi_hw *lhw;
struct ieee80211com *ic;
struct mbuf *m;
@ -4371,7 +4370,6 @@ linuxkpi_ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb,
}
#endif
NET_EPOCH_ENTER(et);
if (ni != NULL) {
ok = ieee80211_input_mimo(ni, m);
ieee80211_free_node(ni);
@ -4381,7 +4379,6 @@ linuxkpi_ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb,
ok = ieee80211_input_mimo_all(ic, m);
/* mbuf got consumed. */
}
NET_EPOCH_EXIT(et);
#ifdef LINUXKPI_DEBUG_80211
if (linuxkpi_debug_80211 & D80211_TRACE_RX)

4
sys/net80211/ieee80211_hostap.c
View file

@ -419,6 +419,8 @@ hostap_deliver_data(struct ieee80211vap *vap,
(void) ieee80211_vap_xmitpkt(vap, mcopy);
}
if (m != NULL) {
struct epoch_tracker et;
/*
* Mark frame as coming from vap's interface.
*/
@ -435,7 +437,9 @@ hostap_deliver_data(struct ieee80211vap *vap,
m->m_pkthdr.ether_vtag = ni->ni_vlan;
m->m_flags |= M_VLANTAG;
}
NET_EPOCH_ENTER(et);
ifp->if_input(ifp, m);
NET_EPOCH_EXIT(et);
}
}

3
sys/net80211/ieee80211_input.c
View file

@ -274,6 +274,7 @@ void
ieee80211_deliver_data(struct ieee80211vap *vap,
struct ieee80211_node *ni, struct mbuf *m)
{
struct epoch_tracker et;
struct ether_header *eh = mtod(m, struct ether_header *);
struct ifnet *ifp = vap->iv_ifp;
@ -304,7 +305,9 @@ ieee80211_deliver_data(struct ieee80211vap *vap,
m->m_pkthdr.ether_vtag = ni->ni_vlan;
m->m_flags |= M_VLANTAG;
}
NET_EPOCH_ENTER(et);
ifp->if_input(ifp, m);
NET_EPOCH_EXIT(et);
}
struct mbuf *