diff options
| author | sephe <sephe@FreeBSD.org> | 2016-09-01 08:01:13 +0000 |
|---|---|---|
| committer | sephe <sephe@FreeBSD.org> | 2016-09-01 08:01:13 +0000 |
| commit | 2affb9c948fba64f20c549b598427c39e4f51527 (patch) | |
| tree | a4d3ef562323e55f8803cd9bfbb1e350a0972319 /sys/netinet/tcp_lro.c | |
| parent | 12a1c9434d6e284a4bf07e498e91f4ae601ce172 (diff) | |
| download | FreeBSD-src-2affb9c948fba64f20c549b598427c39e4f51527.zip FreeBSD-src-2affb9c948fba64f20c549b598427c39e4f51527.tar.gz | |
MFC 304202
tcp/lro: Make # of LRO entries tunable
Reviewed by: hps, gallatin
Obtained from: rrs, gallatin
Sponsored by: Netflix (rrs, gallatin), Microsoft (sephe)
Differential Revision: https://reviews.freebsd.org/D7499
Diffstat (limited to 'sys/netinet/tcp_lro.c')
| -rw-r--r-- | sys/netinet/tcp_lro.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/sys/netinet/tcp_lro.c b/sys/netinet/tcp_lro.c index 761d8f3..65e2e35 100644 --- a/sys/netinet/tcp_lro.c +++ b/sys/netinet/tcp_lro.c @@ -40,6 +40,7 @@ __FBSDID("$FreeBSD$"); #include <sys/mbuf.h> #include <sys/kernel.h> #include <sys/socket.h> +#include <sys/sysctl.h> #include <net/if.h> #include <net/if_var.h> @@ -53,6 +54,7 @@ __FBSDID("$FreeBSD$"); #include <netinet/ip_var.h> #include <netinet/tcp.h> #include <netinet/tcp_lro.h> +#include <netinet/tcp_var.h> #include <netinet6/ip6_var.h> @@ -67,6 +69,14 @@ __FBSDID("$FreeBSD$"); #define TCP_LRO_INVALID_CSUM 0x0000 #endif +SYSCTL_NODE(_net_inet_tcp, OID_AUTO, lro, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, + "TCP LRO"); + +static unsigned tcp_lro_entries = LRO_ENTRIES; +SYSCTL_UINT(_net_inet_tcp_lro, OID_AUTO, entries, + CTLFLAG_RDTUN | CTLFLAG_MPSAFE, &tcp_lro_entries, 0, + "default number of LRO entries"); + int tcp_lro_init(struct lro_ctrl *lc) { @@ -81,7 +91,7 @@ tcp_lro_init(struct lro_ctrl *lc) SLIST_INIT(&lc->lro_active); error = 0; - for (i = 0; i < LRO_ENTRIES; i++) { + for (i = 0; i < tcp_lro_entries; i++) { le = (struct lro_entry *)malloc(sizeof(*le), M_DEVBUF, M_NOWAIT | M_ZERO); if (le == NULL) { |
