/* * netsniff-ng - the packet sniffing beast * Copyright 2009, 2010 Daniel Borkmann. * Copyright 2014 Tobias Klauser * Subject to the GPL, version 2. */ #include #include #include #include #include "proto.h" #include "dissector_eth.h" #include "lookup.h" #include "pkt_buff.h" #include "oui.h" static inline bool is_multicast_ether_addr(const uint8_t *mac) { return mac[0] & 0x01; } static inline bool is_broadcast_ether_addr(const uint8_t *mac) { return (mac[0] & mac[1] & mac[2] & mac[3] & mac[4] & mac[5]) == 0xff; } static const char *ether_lookup_addr(uint8_t *mac) { if (is_multicast_ether_addr(mac)) { if (is_broadcast_ether_addr(mac)) return "Broadcast"; else return "Multicast"; } /* found no matching address, so look up the vendor from OUI */ return lookup_vendor_str((mac[0] << 16) | (mac[1] << 8) | mac[2]); } static void ethernet(struct pkt_buff *pkt) { char *type; uint8_t *src_mac, *dst_mac; struct ethhdr *eth = (struct ethhdr *) pkt_pull(pkt, sizeof(*eth)); if (eth == NULL) return; src_mac = eth->h_source; dst_mac = eth->h_dest; tprintf(" [ Eth "); tprintf("MAC (%.2x:%.2x:%.2x:%.2x:%.2x:%.2x => ", src_mac[0], src_mac[1], src_mac[2], src_mac[3], src_mac[4], src_mac[5]); tprintf("%.2x:%.2x:%.2x:%.2x:%.2x:%.2x), ", dst_mac[0], dst_mac[1], dst_mac[2], dst_mac[3], dst_mac[4], dst_mac[5]); tprintf("Proto (0x%.4x", ntohs(eth->h_proto)); type = lookup_ether_type(ntohs(eth->h_proto)); if (type) tprintf(", %s%s%s", colorize_start(bold), type, colorize_end()); tprintf(") ]\n"); tprintf(" [ Vendor "); tprintf("(%s => %s)", ether_lookup_addr(src_mac), ether_lookup_addr(dst_mac)); tprintf(" ]\n"); pkt_set_proto(pkt, ð_lay2, ntohs(eth->h_proto)); } static void ethernet_less(struct pkt_buff *pkt) { uint8_t *src_mac, *dst_mac; struct ethhdr *eth = (struct ethhdr *) pkt_pull(pkt, sizeof(*eth)); if (eth == NULL) return; src_mac = eth->h_source; dst_mac = eth->h_dest; tprintf(" %s => %s ", lookup_vendor_str((src_mac[0] << 16) | (src_mac[1] << 8) | src_mac[2]), lookup_vendor_str((dst_mac[0] << 16) | (dst_mac[1] << 8) | dst_mac[2])); tprintf("%s%s%s", colorize_start(bold), lookup_ether_type(ntohs(eth->h_proto)), colorize_end()); pkt_set_proto(pkt, ð_lay2, ntohs(eth->h_proto)); } struct protocol ethernet_ops = { .key = 0, .print_full = ethernet, .print_less = ethernet_less, }; orm>
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authorRob Clark <robdclark@gmail.com>2016-06-16 11:49:09 -0400
committerRob Clark <robdclark@gmail.com>2016-07-16 10:09:09 -0400
commit6507e799f432d9fa86ba398b095ef1139a70deac (patch)
tree0493feff8a3f7a20fd2817a3493305f58ffa638b
parenta8d854c102f880984c9c21241483716ee4054ff2 (diff)
drm/msm/rd: split out snapshot_buf helper
(reduce the noise in next patch) Signed-off-by: Rob Clark <robdclark@gmail.com>