diff options
| -rw-r--r-- | net/mptcp/pm.c | 9 | ||||
| -rw-r--r-- | net/mptcp/pm_netlink.c | 70 | ||||
| -rw-r--r-- | net/mptcp/protocol.h | 4 |
3 files changed, 51 insertions, 32 deletions
diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c index b4a1277b4bb5..7dbbad1e4f55 100644 --- a/net/mptcp/pm.c +++ b/net/mptcp/pm.c @@ -448,6 +448,15 @@ int mptcp_pm_get_flags_and_ifindex_by_id(struct mptcp_sock *msk, unsigned int id return mptcp_pm_nl_get_flags_and_ifindex_by_id(msk, id, flags, ifindex); } +int mptcp_pm_set_flags(struct net *net, struct nlattr *token, + struct mptcp_pm_addr_entry *loc, + struct mptcp_pm_addr_entry *rem, u8 bkup) +{ + if (token) + return mptcp_userspace_pm_set_flags(net, token, loc, rem, bkup); + return mptcp_pm_nl_set_flags(net, loc, bkup); +} + void mptcp_pm_subflow_chk_stale(const struct mptcp_sock *msk, struct sock *ssk) { struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(ssk); diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index 0fd938933373..a12a87b780f6 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -1882,18 +1882,50 @@ next: return ret; } +int mptcp_pm_nl_set_flags(struct net *net, struct mptcp_pm_addr_entry *addr, u8 bkup) +{ + struct pm_nl_pernet *pernet = pm_nl_get_pernet(net); + u8 changed, mask = MPTCP_PM_ADDR_FLAG_BACKUP | + MPTCP_PM_ADDR_FLAG_FULLMESH; + struct mptcp_pm_addr_entry *entry; + u8 lookup_by_id = 0; + + if (addr->addr.family == AF_UNSPEC) { + lookup_by_id = 1; + if (!addr->addr.id) + return -EOPNOTSUPP; + } + + spin_lock_bh(&pernet->lock); + entry = __lookup_addr(pernet, &addr->addr, lookup_by_id); + if (!entry) { + spin_unlock_bh(&pernet->lock); + return -EINVAL; + } + if ((addr->flags & MPTCP_PM_ADDR_FLAG_FULLMESH) && + (entry->flags & MPTCP_PM_ADDR_FLAG_SIGNAL)) { + spin_unlock_bh(&pernet->lock); + return -EINVAL; + } + + changed = (addr->flags ^ entry->flags) & mask; + entry->flags = (entry->flags & ~mask) | (addr->flags & mask); + *addr = *entry; + spin_unlock_bh(&pernet->lock); + + mptcp_nl_set_flags(net, &addr->addr, bkup, changed); + return 0; +} + static int mptcp_nl_cmd_set_flags(struct sk_buff *skb, struct genl_info *info) { - struct mptcp_pm_addr_entry addr = { .addr = { .family = AF_UNSPEC }, }, *entry; struct mptcp_pm_addr_entry remote = { .addr = { .family = AF_UNSPEC }, }; + struct mptcp_pm_addr_entry addr = { .addr = { .family = AF_UNSPEC }, }; struct nlattr *attr_rem = info->attrs[MPTCP_PM_ATTR_ADDR_REMOTE]; struct nlattr *token = info->attrs[MPTCP_PM_ATTR_TOKEN]; struct nlattr *attr = info->attrs[MPTCP_PM_ATTR_ADDR]; - struct pm_nl_pernet *pernet = genl_info_pm_nl(info); - u8 changed, mask = MPTCP_PM_ADDR_FLAG_BACKUP | - MPTCP_PM_ADDR_FLAG_FULLMESH; struct net *net = sock_net(skb->sk); - u8 bkup = 0, lookup_by_id = 0; + u8 bkup = 0; int ret; ret = mptcp_pm_parse_entry(attr, info, false, &addr); @@ -1908,34 +1940,8 @@ static int mptcp_nl_cmd_set_flags(struct sk_buff *skb, struct genl_info *info) if (addr.flags & MPTCP_PM_ADDR_FLAG_BACKUP) bkup = 1; - if (addr.addr.family == AF_UNSPEC) { - lookup_by_id = 1; - if (!addr.addr.id) - return -EOPNOTSUPP; - } - - if (token) - return mptcp_userspace_pm_set_flags(net, token, &addr, &remote, bkup); - - spin_lock_bh(&pernet->lock); - entry = __lookup_addr(pernet, &addr.addr, lookup_by_id); - if (!entry) { - spin_unlock_bh(&pernet->lock); - return -EINVAL; - } - if ((addr.flags & MPTCP_PM_ADDR_FLAG_FULLMESH) && - (entry->flags & MPTCP_PM_ADDR_FLAG_SIGNAL)) { - spin_unlock_bh(&pernet->lock); - return -EINVAL; - } - changed = (addr.flags ^ entry->flags) & mask; - entry->flags = (entry->flags & ~mask) | (addr.flags & mask); - addr = *entry; - spin_unlock_bh(&pernet->lock); - - mptcp_nl_set_flags(net, &addr.addr, bkup, changed); - return 0; + return mptcp_pm_set_flags(net, token, &addr, &remote, bkup); } static void mptcp_nl_mcast_send(struct net *net, struct sk_buff *nlskb, gfp_t gfp) diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 0a0a36fd0310..47b46602870e 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -827,6 +827,10 @@ int mptcp_pm_nl_get_flags_and_ifindex_by_id(struct mptcp_sock *msk, unsigned int int mptcp_userspace_pm_get_flags_and_ifindex_by_id(struct mptcp_sock *msk, unsigned int id, u8 *flags, int *ifindex); +int mptcp_pm_set_flags(struct net *net, struct nlattr *token, + struct mptcp_pm_addr_entry *loc, + struct mptcp_pm_addr_entry *rem, u8 bkup); +int mptcp_pm_nl_set_flags(struct net *net, struct mptcp_pm_addr_entry *addr, u8 bkup); int mptcp_userspace_pm_set_flags(struct net *net, struct nlattr *token, struct mptcp_pm_addr_entry *loc, struct mptcp_pm_addr_entry *rem, u8 bkup); |