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[2001:8b0:7a5a:26ff:60d6:619e:3324:40dc]) by smtp.gmail.com with ESMTPSA id 3sm4204565wms.36.2020.08.19.02.37.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Aug 2020 02:37:46 -0700 (PDT) From: Lorenz Bauer To: jakub@cloudflare.com, john.fastabend@gmail.com, Daniel Borkmann , Lorenz Bauer , "David S. Miller" , Jakub Kicinski , Alexei Starovoitov Cc: kernel-team@cloudflare.com, netdev@vger.kernel.org, bpf@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH bpf-next 2/6] bpf: sockmap: merge sockmap and sockhash update functions Date: Wed, 19 Aug 2020 10:24:32 +0100 Message-Id: <20200819092436.58232-3-lmb@cloudflare.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200819092436.58232-1-lmb@cloudflare.com> References: <20200819092436.58232-1-lmb@cloudflare.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Merge the two very similar functions sock_map_update_elem and sock_hash_update_elem into one. Signed-off-by: Lorenz Bauer --- net/core/sock_map.c | 53 ++++++++------------------------------------- 1 file changed, 9 insertions(+), 44 deletions(-) diff --git a/net/core/sock_map.c b/net/core/sock_map.c index abe4bac40db9..f464a0ebc871 100644 --- a/net/core/sock_map.c +++ b/net/core/sock_map.c @@ -559,10 +559,12 @@ static bool sock_map_sk_state_allowed(const struct sock *sk) return false; } -static int sock_map_update_elem(struct bpf_map *map, void *key, - void *value, u64 flags) +static int sock_hash_update_common(struct bpf_map *map, void *key, + struct sock *sk, u64 flags); + +int sock_map_update_elem(struct bpf_map *map, void *key, + void *value, u64 flags) { - u32 idx = *(u32 *)key; struct socket *sock; struct sock *sk; int ret; @@ -591,8 +593,10 @@ static int sock_map_update_elem(struct bpf_map *map, void *key, sock_map_sk_acquire(sk); if (!sock_map_sk_state_allowed(sk)) ret = -EOPNOTSUPP; + else if (map->map_type == BPF_MAP_TYPE_SOCKMAP) + ret = sock_map_update_common(map, *(u32 *)key, sk, flags); else - ret = sock_map_update_common(map, idx, sk, flags); + ret = sock_hash_update_common(map, key, sk, flags); sock_map_sk_release(sk); out: fput(sock->file); @@ -909,45 +913,6 @@ static int sock_hash_update_common(struct bpf_map *map, void *key, return ret; } -static int sock_hash_update_elem(struct bpf_map *map, void *key, - void *value, u64 flags) -{ - struct socket *sock; - struct sock *sk; - int ret; - u64 ufd; - - if (map->value_size == sizeof(u64)) - ufd = *(u64 *)value; - else - ufd = *(u32 *)value; - if (ufd > S32_MAX) - return -EINVAL; - - sock = sockfd_lookup(ufd, &ret); - if (!sock) - return ret; - sk = sock->sk; - if (!sk) { - ret = -EINVAL; - goto out; - } - if (!sock_map_sk_is_suitable(sk)) { - ret = -EOPNOTSUPP; - goto out; - } - - sock_map_sk_acquire(sk); - if (!sock_map_sk_state_allowed(sk)) - ret = -EOPNOTSUPP; - else - ret = sock_hash_update_common(map, key, sk, flags); - sock_map_sk_release(sk); -out: - fput(sock->file); - return ret; -} - static int sock_hash_get_next_key(struct bpf_map *map, void *key, void *key_next) { @@ -1216,7 +1181,7 @@ const struct bpf_map_ops sock_hash_ops = { .map_alloc = sock_hash_alloc, .map_free = sock_hash_free, .map_get_next_key = sock_hash_get_next_key, - .map_update_elem = sock_hash_update_elem, + .map_update_elem = sock_map_update_elem, .map_delete_elem = sock_hash_delete_elem, .map_lookup_elem = sock_hash_lookup, .map_lookup_elem_sys_only = sock_hash_lookup_sys, -- 2.25.1