diff options
Diffstat (limited to 'src/dgram/dgram_link.c')
| -rw-r--r-- | src/dgram/dgram_link.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/dgram/dgram_link.c b/src/dgram/dgram_link.c index 47646d6..03c4159 100644 --- a/src/dgram/dgram_link.c +++ b/src/dgram/dgram_link.c @@ -36,6 +36,7 @@ #include <string.h> #include "if_ether.h" #include "dgram.h" +#include "crc.h" tx_len_t dgram_send(struct onet_link *link, mac_addr_t dst, void *buf, uint16_t len) @@ -80,13 +81,16 @@ dgram_send(struct onet_link *link, mac_addr_t dst, void *buf, uint16_t len) return len; } +#include <stdio.h> rx_len_t dgram_recv(struct onet_link *link, void *buf, uint16_t len) { socklen_t addr_len; struct sockaddr_ll saddr; + struct onet_dgram *o1p_hdr; struct ether_hdr *hdr; size_t dgram_len, recv_len; + uint32_t crc; uint16_t proto; mac_addr_t dest_mac; char *p; @@ -133,6 +137,12 @@ dgram_recv(struct onet_link *link, void *buf, uint16_t len) continue; } + o1p_hdr = DGRAM_HDR(p); + crc = crc32(o1p_hdr, sizeof(*o1p_hdr) - sizeof(crc)); + if (crc != o1p_hdr->crc32) { + continue; + } + /* If this is for everyone, take it */ if (dest_mac == MAC_BROADCAST) { break; |