diff options
author | Lennart Poettering <lennart@poettering.net> | 2016-02-21 14:11:34 +0100 |
---|---|---|
committer | Lennart Poettering <lennart@poettering.net> | 2016-02-21 20:40:58 +0100 |
commit | b553a6b13c68cb72addde48281abe3f3b46e16a4 (patch) | |
tree | d8f8548603e1bd3a2812257eae233fba546e2e24 /src/basic | |
parent | 33859a6bf5fd2b62a562a751a509708617e19776 (diff) |
sd-lldp: filter out LLDP messages coming from our own MAC address
Let's not get confused should we be connected to some bridge that mirrors back
our packets.
Diffstat (limited to 'src/basic')
-rw-r--r-- | src/basic/ether-addr-util.c | 23 | ||||
-rw-r--r-- | src/basic/ether-addr-util.h | 5 |
2 files changed, 27 insertions, 1 deletions
diff --git a/src/basic/ether-addr-util.c b/src/basic/ether-addr-util.c index ded6d31f4b..d2c030903b 100644 --- a/src/basic/ether-addr-util.c +++ b/src/basic/ether-addr-util.c @@ -42,3 +42,26 @@ char* ether_addr_to_string(const struct ether_addr *addr, char buffer[ETHER_ADDR return buffer; } + +bool ether_addr_is_null(const struct ether_addr *addr) { + assert(addr); + + return addr->ether_addr_octet[0] == 0 && + addr->ether_addr_octet[1] == 0 && + addr->ether_addr_octet[2] == 0 && + addr->ether_addr_octet[3] == 0 && + addr->ether_addr_octet[4] == 0 && + addr->ether_addr_octet[5] == 0; +} + +bool ether_addr_equal(const struct ether_addr *a, const struct ether_addr *b) { + assert(a); + assert(b); + + return a->ether_addr_octet[0] == b->ether_addr_octet[0] && + a->ether_addr_octet[1] == b->ether_addr_octet[1] && + a->ether_addr_octet[2] == b->ether_addr_octet[2] && + a->ether_addr_octet[3] == b->ether_addr_octet[3] && + a->ether_addr_octet[4] == b->ether_addr_octet[4] && + a->ether_addr_octet[5] == b->ether_addr_octet[5]; +} diff --git a/src/basic/ether-addr-util.h b/src/basic/ether-addr-util.h index 4487149efd..00c5159fe8 100644 --- a/src/basic/ether-addr-util.h +++ b/src/basic/ether-addr-util.h @@ -20,10 +20,13 @@ ***/ #include <net/ethernet.h> +#include <stdbool.h> #define ETHER_ADDR_FORMAT_STR "%02X%02X%02X%02X%02X%02X" #define ETHER_ADDR_FORMAT_VAL(x) (x).ether_addr_octet[0], (x).ether_addr_octet[1], (x).ether_addr_octet[2], (x).ether_addr_octet[3], (x).ether_addr_octet[4], (x).ether_addr_octet[5] #define ETHER_ADDR_TO_STRING_MAX (3*6) - char* ether_addr_to_string(const struct ether_addr *addr, char buffer[ETHER_ADDR_TO_STRING_MAX]); + +bool ether_addr_is_null(const struct ether_addr *addr); +bool ether_addr_equal(const struct ether_addr *a, const struct ether_addr *b); |