diff options
| author | Zhenlei Huang <zlei@FreeBSD.org> | 2026-02-06 17:52:53 +0000 |
|---|---|---|
| committer | Zhenlei Huang <zlei@FreeBSD.org> | 2026-02-06 17:52:53 +0000 |
| commit | 0df8a998a9fe28af659cb401c537c6d785e55f81 (patch) | |
| tree | a966299963f7ea86c2c213cf264e96d3d04bb4e1 | |
| parent | f250852c9a0c1021c3be4b498e27cfc7b42a81db (diff) | |
qlnxe: Prevent potential concurrency between ioctls
The driver-managed status flags should be lock protected to be touched.
Also this can serialize ioctls those check the IFF_DRV_RUNNING status.
Reviewed by: kbowling
MFC after: 5 days
Differential Revision: https://reviews.freebsd.org/D54886
| -rw-r--r-- | sys/dev/qlnx/qlnxe/qlnx_os.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/sys/dev/qlnx/qlnxe/qlnx_os.c b/sys/dev/qlnx/qlnxe/qlnx_os.c index ec2fd7cacfae..b0dac3a82582 100644 --- a/sys/dev/qlnx/qlnxe/qlnx_os.c +++ b/sys/dev/qlnx/qlnxe/qlnx_os.c @@ -2568,9 +2568,7 @@ qlnx_set_multi(qlnx_host_t *ha, uint32_t add_multi) mcnt = if_foreach_llmaddr(ifp, qlnx_copy_maddr, mta); - QLNX_LOCK(ha); qlnx_hw_set_multi(ha, mta, mcnt, add_multi); - QLNX_UNLOCK(ha); return (0); } @@ -2637,11 +2635,10 @@ qlnx_ioctl(if_t ifp, u_long cmd, caddr_t data) #ifdef INET if (ifa->ifa_addr->sa_family == AF_INET) { if_setflagbits(ifp, IFF_UP, 0); - if (!(if_getdrvflags(ifp) & IFF_DRV_RUNNING)) { - QLNX_LOCK(ha); + QLNX_LOCK(ha); + if ((if_getdrvflags(ifp) & IFF_DRV_RUNNING) == 0) qlnx_init_locked(ha); - QLNX_UNLOCK(ha); - } + QLNX_UNLOCK(ha); QL_DPRINT4(ha, "SIOCSIFADDR (0x%lx) ipv4 [0x%08x]\n", cmd, ntohl(IA_SIN(ifa)->sin_addr.s_addr)); @@ -2703,19 +2700,23 @@ qlnx_ioctl(if_t ifp, u_long cmd, caddr_t data) case SIOCADDMULTI: QL_DPRINT4(ha, "%s (0x%lx)\n", "SIOCADDMULTI", cmd); - if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) { + QLNX_LOCK(ha); + if ((if_getdrvflags(ifp) & IFF_DRV_RUNNING) != 0) { if (qlnx_set_multi(ha, 1)) ret = EINVAL; } + QLNX_UNLOCK(ha); break; case SIOCDELMULTI: QL_DPRINT4(ha, "%s (0x%lx)\n", "SIOCDELMULTI", cmd); - if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) { + QLNX_LOCK(ha); + if ((if_getdrvflags(ifp) & IFF_DRV_RUNNING) != 0) { if (qlnx_set_multi(ha, 0)) ret = EINVAL; } + QLNX_UNLOCK(ha); break; case SIOCSIFMEDIA: |