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| author | glebius <glebius@FreeBSD.org> | 2014-09-18 09:54:57 +0000 |
|---|---|---|
| committer | glebius <glebius@FreeBSD.org> | 2014-09-18 09:54:57 +0000 |
| commit | f76e492f6dfbd579c3522f6e324fde5b1c468b40 (patch) | |
| tree | a82c2953eeb2500e6aa798d4beb4446072ec0566 | |
| parent | 433c60fe4542d02babe6dd3cd5c0a50b3fdaef3f (diff) | |
| download | FreeBSD-src-f76e492f6dfbd579c3522f6e324fde5b1c468b40.zip FreeBSD-src-f76e492f6dfbd579c3522f6e324fde5b1c468b40.tar.gz | |
Add if_inc_counter(), a generic method to update ifnet(9) counter
w/o dereferencing the struct.
Sponsored by: Netflix
Sponsored by: Nginx, Inc.
| -rw-r--r-- | sys/net/if.c | 50 | ||||
| -rw-r--r-- | sys/net/if_var.h | 1 |
2 files changed, 51 insertions, 0 deletions
diff --git a/sys/net/if.c b/sys/net/if.c index 017af33..4dbe4eb 100644 --- a/sys/net/if.c +++ b/sys/net/if.c @@ -1422,6 +1422,56 @@ if_get_counter_compat(struct ifnet *ifp, ifnet_counter cnt) } /* + * Increase an ifnet counter. Usually used for counters shared + * between the stack and a driver, but function supports them all. + */ +void +if_inc_counter(struct ifnet *ifp, ifnet_counter cnt, int64_t inc) +{ + + switch (cnt) { + case IFCOUNTER_IPACKETS: + ifp->if_ipackets += inc; + break; + case IFCOUNTER_IERRORS: + ifp->if_ierrors += inc; + break; + case IFCOUNTER_OPACKETS: + ifp->if_opackets += inc; + break; + case IFCOUNTER_OERRORS: + ifp->if_oerrors += inc; + break; + case IFCOUNTER_COLLISIONS: + ifp->if_collisions += inc; + break; + case IFCOUNTER_IBYTES: + ifp->if_ibytes += inc; + break; + case IFCOUNTER_OBYTES: + ifp->if_obytes += inc; + break; + case IFCOUNTER_IMCASTS: + ifp->if_imcasts += inc; + break; + case IFCOUNTER_OMCASTS: + ifp->if_omcasts += inc; + break; + case IFCOUNTER_IQDROPS: + ifp->if_iqdrops += inc; + break; + case IFCOUNTER_OQDROPS: + ifp->if_oqdrops += inc; + break; + case IFCOUNTER_NOPROTO: + ifp->if_noproto += inc; + break; + default: + panic("%s: unknown counter %d", __func__, cnt); + } +} + +/* * Copy data from ifnet to userland API structure if_data. */ void diff --git a/sys/net/if_var.h b/sys/net/if_var.h index 09f41b8..9490631 100644 --- a/sys/net/if_var.h +++ b/sys/net/if_var.h @@ -528,6 +528,7 @@ void if_register_com_alloc(u_char type, if_com_alloc_t *a, if_com_free_t *f); void if_deregister_com_alloc(u_char type); void if_data_copy(struct ifnet *, struct if_data *); uint64_t if_get_counter_compat(struct ifnet *, ifnet_counter); +void if_inc_counter(struct ifnet *, ifnet_counter, int64_t); #define IF_LLADDR(ifp) \ LLADDR((struct sockaddr_dl *)((ifp)->if_addr->ifa_addr)) |
