/* * netsniff-ng - the packet sniffing beast * Copyright 2011 Daniel Borkmann. * Subject to the GPL, version 2. */ #include #include #include #include "patricia.h" #include "locking.h" #include "trie.h" #include "ipv4.h" #include "ipv6.h" static struct patricia_node *tree = NULL; static struct rwlock tree_lock; void trie_addr_lookup(char *buff, size_t len, int ipv4, int *fd, struct sockaddr_storage *addr, size_t *alen) { void *data; size_t dlen; struct ipv4hdr *hdr4 = (void *) buff; struct ipv6hdr *hdr6 = (void *) buff; data = ipv4 ? (void *) &hdr4->h_daddr : (void *) &hdr6->daddr; dlen = ipv4 ? sizeof(hdr4->h_daddr) : sizeof(hdr6->daddr); if (unlikely((ipv4 && ((struct ipv4hdr *) buff)->h_version != 4) || (!ipv4 && ((struct ipv6hdr *) buff)->version != 6))) { memset(addr, 0, sizeof(*addr)); (*alen) = 0; (*fd) = -1; return; } rwlock_rd_lock(&tree_lock); (*fd) = ptree_search_data_exact(data, dlen, addr, alen, tree); rwlock_unlock(&tree_lock); } int trie_addr_maybe_update(char *buff, size_t len, int ipv4, int fd, struct sockaddr_storage *addr, size_t alen) { int ret; void *data; size_t dlen; struct ipv4hdr *hdr4 = (void *) buff; struct ipv6hdr *hdr6 = (void *) buff; data = ipv4 ? (void *) &hdr4->h_saddr : (void *) &hdr6->saddr; dlen = ipv4 ? sizeof(hdr4->h_saddr) : sizeof(hdr6->saddr); if (unlikely((ipv4 && ((struct ipv4hdr *) buff)->h_version != 4) || (!ipv4 && ((struct ipv6hdr *) buff)->version != 6))) return -1; rwlock_wr_lock(&tree_lock); ret = ptree_add_entry(data, dlen, fd, addr, alen, &tree); rwlock_unlock(&tree_lock); return ret; } void trie_addr_remove(int fd) { int found = 1; struct patricia_node *n = NULL; rwlock_wr_lock(&tree_lock); while (found) { ptree_get_key(fd, tree, &n); if (n) { ptree_del_entry(n->key, n->klen, &tree); n = NULL; } else found = 0; } rwlock_unlock(&tree_lock); } void trie_addr_remove_addr(struct sockaddr_storage *addr, size_t alen) { int found = 1; struct patricia_node *n = NULL; rwlock_wr_lock(&tree_lock); while (found) { ptree_get_key_addr(addr, alen, tree, &n); if (n) { ptree_del_entry(n->key, n->klen, &tree); n = NULL; } else found = 0; } rwlock_unlock(&tree_lock); } void trie_init(void) { rwlock_init(&tree_lock); } void trie_cleanup(void) { rwlock_wr_lock(&tree_lock); ptree_free(tree); rwlock_unlock(&tree_lock); rwlock_destroy(&tree_lock); } lue='8509eb19618c050b017a3da7f6dd3180106cdf32'/>
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authorDave Airlie <airlied@redhat.com>2016-09-01 06:03:35 +1000
committerDave Airlie <airlied@redhat.com>2016-09-01 06:03:35 +1000
commit8509eb19618c050b017a3da7f6dd3180106cdf32 (patch)
tree19fa505b6ea3cf8b96a159dae2b33cae2ae604f2 /Documentation
parent279cf3f23870f7eb8ca071115e06d3d5ca0a2b9e (diff)
parent1f703e6679f373f5bba4efe7093aa82e91af4037 (diff)
Merge branch 'drm-fixes-4.8' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
Fixes for 4.8: - 2 CI S4 fixes - error handling fix * 'drm-fixes-4.8' of git://people.freedesktop.org/~agd5f/linux: drm/amdgpu: record error code when ring test failed drm/amd/amdgpu: compute ring test fail during S4 on CI drm/amd/amdgpu: sdma resume fail during S4 on CI
Diffstat (limited to 'Documentation')