[mptcp-next,v3,01/10] mptcp: add struct mptcp_id_bitmap

Message ID	492eb1cf8c8717111dd9c32496d5edcfa2b49ed3.1728298100.git.tanggeliang@kylinos.cn (mailing list archive)
State	Superseded, archived
Headers	show Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9FCB41D1319 for <mptcp@lists.linux.dev>; Mon, 7 Oct 2024 10:53:29 +0000 (UTC) From: Geliang Tang <geliang@kernel.org> To: mptcp@lists.linux.dev Cc: Geliang Tang <tanggeliang@kylinos.cn> Subject: [PATCH mptcp-next v3 01/10] mptcp: add struct mptcp_id_bitmap Date: Mon, 7 Oct 2024 18:53:13 +0800 Message-ID: <492eb1cf8c8717111dd9c32496d5edcfa2b49ed3.1728298100.git.tanggeliang@kylinos.cn> In-Reply-To: <cover.1728298100.git.tanggeliang@kylinos.cn> References: <cover.1728298100.git.tanggeliang@kylinos.cn> Precedence: bulk MIME-Version: 1.0 Content-Transfer-Encoding: 8bit
Series	cleanups for PM interfaces \| expand [mptcp-next,v3,00/10] cleanups for PM interfaces [mptcp-next,v3,01/10] mptcp: add struct mptcp_id_bitmap [mptcp-next,v3,02/10] mptcp: add mptcp_userspace_pm_get_sock helper [mptcp-next,v3,03/10] mptcp: use __lookup_addr in pm_netlink [mptcp-next,v3,04/10] mptcp: use sock_kfree_s instead of kfree [mptcp-next,v3,05/10] mptcp: add lookup_addr for userspace pm [mptcp-next,v3,06/10] mptcp: change remote as mptcp_addr_info [mptcp-next,v3,07/10] mptcp: change local as mptcp_pm_addr_entry [mptcp-next,v3,08/10] mptcp: make pm wrappers static [mptcp-next,v3,09/10] mptcp: drop skb parameter of get_addr [mptcp-next,v3,10/10] mptcp: drop skb parameter of set_flags

Context	Check	Description
matttbe/KVM_Validation__normal	success	Success! ✅
matttbe/KVM_Validation__debug	success	Success! ✅
matttbe/KVM_Validation__btf__only_bpftest_all_	success	Success! ✅
matttbe/checkpatch	success	total: 0 errors, 0 warnings, 0 checks, 242 lines checked
matttbe/shellcheck	success	MPTCP selftests files have not been modified
matttbe/build	success	Build and static analysis OK

diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c index 16c336c51940..5afc1f8e5ca7 100644 --- a/net/mptcp/pm.c +++ b/net/mptcp/pm.c @@ -536,7 +536,7 @@ void mptcp_pm_data_reset(struct mptcp_sock *msk) WRITE_ONCE(pm->addr_signal, 0); WRITE_ONCE(pm->remote_deny_join_id0, false); pm->status = 0; - bitmap_fill(msk->pm.id_avail_bitmap, MPTCP_PM_MAX_ADDR_ID + 1); + bitmap_fill(msk->pm.id_avail_bitmap.map, MPTCP_PM_MAX_ADDR_ID + 1); } void mptcp_pm_data_init(struct mptcp_sock *msk) diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index fe34297ea6dc..6fcbfcbc0edb 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -37,7 +37,7 @@ struct pm_nl_pernet { unsigned int local_addr_max; unsigned int subflows_max; unsigned int next_id; - DECLARE_BITMAP(id_bitmap, MPTCP_PM_MAX_ADDR_ID + 1); + struct mptcp_id_bitmap id_bitmap; }; #define MPTCP_PM_ADDR_MAX 8 @@ -161,7 +161,7 @@ select_local_address(const struct pm_nl_pernet *pernet, if (!(entry->flags & MPTCP_PM_ADDR_FLAG_SUBFLOW)) continue; - if (!test_bit(entry->addr.id, msk->pm.id_avail_bitmap)) + if (!test_bit(entry->addr.id, msk->pm.id_avail_bitmap.map)) continue; new_local->addr = entry->addr; @@ -189,7 +189,7 @@ select_signal_address(struct pm_nl_pernet *pernet, const struct mptcp_sock *msk, * can lead to additional addresses not being announced. */ list_for_each_entry_rcu(entry, &pernet->local_addr_list, list) { - if (!test_bit(entry->addr.id, msk->pm.id_avail_bitmap)) + if (!test_bit(entry->addr.id, msk->pm.id_avail_bitmap.map)) continue; if (!(entry->flags & MPTCP_PM_ADDR_FLAG_SIGNAL)) @@ -243,7 +243,7 @@ bool mptcp_pm_nl_check_work_pending(struct mptcp_sock *msk) struct pm_nl_pernet *pernet = pm_nl_get_pernet_from_msk(msk); if (msk->pm.subflows == mptcp_pm_get_subflows_max(msk) || - (find_next_and_bit(pernet->id_bitmap, msk->pm.id_avail_bitmap, + (find_next_and_bit(pernet->id_bitmap.map, msk->pm.id_avail_bitmap.map, MPTCP_PM_MAX_ADDR_ID + 1, 0) == MPTCP_PM_MAX_ADDR_ID + 1)) { WRITE_ONCE(msk->pm.work_pending, false); return false; @@ -443,15 +443,15 @@ static unsigned int fill_remote_addresses_vec(struct mptcp_sock *msk, msk->pm.subflows++; addrs[i++] = remote; } else { - DECLARE_BITMAP(unavail_id, MPTCP_PM_MAX_ADDR_ID + 1); + struct mptcp_id_bitmap unavail_id; /* Forbid creation of new subflows matching existing * ones, possibly already created by incoming ADD_ADDR */ - bitmap_zero(unavail_id, MPTCP_PM_MAX_ADDR_ID + 1); + bitmap_zero(unavail_id.map, MPTCP_PM_MAX_ADDR_ID + 1); mptcp_for_each_subflow(msk, subflow) if (READ_ONCE(subflow->local_id) == local->id) - __set_bit(subflow->remote_id, unavail_id); + __set_bit(subflow->remote_id, unavail_id.map); mptcp_for_each_subflow(msk, subflow) { ssk = mptcp_subflow_tcp_sock(subflow); @@ -460,7 +460,7 @@ static unsigned int fill_remote_addresses_vec(struct mptcp_sock *msk, if (deny_id0 && !addrs[i].id) continue; - if (test_bit(addrs[i].id, unavail_id)) + if (test_bit(addrs[i].id, unavail_id.map)) continue; if (!mptcp_pm_addr_families_match(sk, local, &addrs[i])) @@ -470,7 +470,7 @@ static unsigned int fill_remote_addresses_vec(struct mptcp_sock *msk, /* forbid creating multiple address towards * this id */ - __set_bit(addrs[i].id, unavail_id); + __set_bit(addrs[i].id, unavail_id.map); msk->pm.subflows++; i++; } @@ -558,7 +558,7 @@ static void mptcp_pm_create_subflow_or_signal_addr(struct mptcp_sock *msk) rcu_read_lock(); entry = __lookup_addr(pernet, &mpc_addr); if (entry) { - __clear_bit(entry->addr.id, msk->pm.id_avail_bitmap); + __clear_bit(entry->addr.id, msk->pm.id_avail_bitmap.map); msk->mpc_endpoint_id = entry->addr.id; backup = !!(entry->flags & MPTCP_PM_ADDR_FLAG_BACKUP); } @@ -596,7 +596,7 @@ static void mptcp_pm_create_subflow_or_signal_addr(struct mptcp_sock *msk) if (!mptcp_pm_alloc_anno_list(msk, &local.addr)) return; - __clear_bit(local.addr.id, msk->pm.id_avail_bitmap); + __clear_bit(local.addr.id, msk->pm.id_avail_bitmap.map); msk->pm.add_addr_signaled++; /* Special case for ID0: set the correct ID */ @@ -625,7 +625,7 @@ static void mptcp_pm_create_subflow_or_signal_addr(struct mptcp_sock *msk) fullmesh = !!(local.flags & MPTCP_PM_ADDR_FLAG_FULLMESH); - __clear_bit(local.addr.id, msk->pm.id_avail_bitmap); + __clear_bit(local.addr.id, msk->pm.id_avail_bitmap.map); /* Special case for ID0: set the correct ID */ if (local.addr.id == msk->mpc_endpoint_id) @@ -990,7 +990,7 @@ static int mptcp_pm_nl_append_new_local_addr(struct pm_nl_pernet *pernet, ret = -ERANGE; goto out; } - if (test_bit(entry->addr.id, pernet->id_bitmap)) { + if (test_bit(entry->addr.id, pernet->id_bitmap.map)) { ret = -EBUSY; goto out; } @@ -1024,7 +1024,7 @@ static int mptcp_pm_nl_append_new_local_addr(struct pm_nl_pernet *pernet, if (!entry->addr.id && needs_id) { find_next: - entry->addr.id = find_next_zero_bit(pernet->id_bitmap, + entry->addr.id = find_next_zero_bit(pernet->id_bitmap.map, MPTCP_PM_MAX_ADDR_ID + 1, pernet->next_id); if (!entry->addr.id && pernet->next_id != 1) { @@ -1036,7 +1036,7 @@ static int mptcp_pm_nl_append_new_local_addr(struct pm_nl_pernet *pernet, if (!entry->addr.id && needs_id) goto out; - __set_bit(entry->addr.id, pernet->id_bitmap); + __set_bit(entry->addr.id, pernet->id_bitmap.map); if (entry->addr.id > pernet->next_id) pernet->next_id = entry->addr.id; @@ -1484,7 +1484,7 @@ static bool mptcp_pm_remove_anno_addr(struct mptcp_sock *msk, if (ret || force) { spin_lock_bh(&msk->pm.lock); if (ret) { - __set_bit(addr->id, msk->pm.id_avail_bitmap); + __set_bit(addr->id, msk->pm.id_avail_bitmap.map); msk->pm.add_addr_signaled--; } mptcp_pm_remove_addr(msk, &list); @@ -1496,7 +1496,7 @@ static bool mptcp_pm_remove_anno_addr(struct mptcp_sock *msk, static void __mark_subflow_endp_available(struct mptcp_sock *msk, u8 id) { /* If it was marked as used, and not ID 0, decrement local_addr_used */ - if (!__test_and_set_bit(id ? : msk->mpc_endpoint_id, msk->pm.id_avail_bitmap) && + if (!__test_and_set_bit(id ? : msk->mpc_endpoint_id, msk->pm.id_avail_bitmap.map) && id && !WARN_ON_ONCE(msk->pm.local_addr_used == 0)) msk->pm.local_addr_used--; } @@ -1627,7 +1627,7 @@ int mptcp_pm_nl_del_addr_doit(struct sk_buff *skb, struct genl_info *info) pernet->addrs--; list_del_rcu(&entry->list); - __clear_bit(entry->addr.id, pernet->id_bitmap); + __clear_bit(entry->addr.id, pernet->id_bitmap.map); spin_unlock_bh(&pernet->lock); mptcp_nl_remove_subflow_and_signal_addr(sock_net(skb->sk), entry); @@ -1691,7 +1691,7 @@ static void mptcp_pm_flush_addrs_and_subflows(struct mptcp_sock *msk, if (slist.nr) mptcp_pm_nl_rm_subflow_received(msk, &slist); /* Reset counters: maybe some subflows have been removed before */ - bitmap_fill(msk->pm.id_avail_bitmap, MPTCP_PM_MAX_ADDR_ID + 1); + bitmap_fill(msk->pm.id_avail_bitmap.map, MPTCP_PM_MAX_ADDR_ID + 1); msk->pm.local_addr_used = 0; spin_unlock_bh(&msk->pm.lock); } @@ -1749,7 +1749,7 @@ int mptcp_pm_nl_flush_addrs_doit(struct sk_buff *skb, struct genl_info *info) list_splice_init(&pernet->local_addr_list, &free_list); __reset_counters(pernet); pernet->next_id = 1; - bitmap_zero(pernet->id_bitmap, MPTCP_PM_MAX_ADDR_ID + 1); + bitmap_zero(pernet->id_bitmap.map, MPTCP_PM_MAX_ADDR_ID + 1); spin_unlock_bh(&pernet->lock); mptcp_nl_flush_addrs_list(sock_net(skb->sk), &free_list); synchronize_rcu(); @@ -1865,7 +1865,7 @@ int mptcp_pm_nl_dump_addr(struct sk_buff *msg, spin_lock_bh(&pernet->lock); for (i = id; i < MPTCP_PM_MAX_ADDR_ID + 1; i++) { - if (test_bit(i, pernet->id_bitmap)) { + if (test_bit(i, pernet->id_bitmap.map)) { entry = __lookup_addr_by_id(pernet, i); if (!entry) break; diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c index 2cceded3a83a..e3f29d8865f4 100644 --- a/net/mptcp/pm_userspace.c +++ b/net/mptcp/pm_userspace.c @@ -30,15 +30,15 @@ static int mptcp_userspace_pm_append_new_local_addr(struct mptcp_sock *msk, struct mptcp_pm_addr_entry *entry, bool needs_id) { - DECLARE_BITMAP(id_bitmap, MPTCP_PM_MAX_ADDR_ID + 1); struct mptcp_pm_addr_entry *match = NULL; struct sock *sk = (struct sock *)msk; + struct mptcp_id_bitmap id_bitmap; struct mptcp_pm_addr_entry *e; bool addr_match = false; bool id_match = false; int ret = -EINVAL; - bitmap_zero(id_bitmap, MPTCP_PM_MAX_ADDR_ID + 1); + bitmap_zero(id_bitmap.map, MPTCP_PM_MAX_ADDR_ID + 1); spin_lock_bh(&msk->pm.lock); list_for_each_entry(e, &msk->pm.userspace_pm_local_addr_list, list) { @@ -52,7 +52,7 @@ static int mptcp_userspace_pm_append_new_local_addr(struct mptcp_sock *msk, } else if (addr_match || id_match) { break; } - __set_bit(e->addr.id, id_bitmap); + __set_bit(e->addr.id, id_bitmap.map); } if (!match && !addr_match && !id_match) { @@ -67,7 +67,7 @@ static int mptcp_userspace_pm_append_new_local_addr(struct mptcp_sock *msk, *e = *entry; if (!e->addr.id && needs_id) - e->addr.id = find_next_zero_bit(id_bitmap, + e->addr.id = find_next_zero_bit(id_bitmap.map, MPTCP_PM_MAX_ADDR_ID + 1, 1); list_add_tail_rcu(&e->list, &msk->pm.userspace_pm_local_addr_list); @@ -612,19 +612,17 @@ int mptcp_userspace_pm_set_flags(struct sk_buff *skb, struct genl_info *info) int mptcp_userspace_pm_dump_addr(struct sk_buff *msg, struct netlink_callback *cb) { - struct id_bitmap { - DECLARE_BITMAP(map, MPTCP_PM_MAX_ADDR_ID + 1); - } *bitmap; const struct genl_info *info = genl_info_dump(cb); struct net *net = sock_net(msg->sk); struct mptcp_pm_addr_entry *entry; + struct mptcp_id_bitmap *bitmap; struct mptcp_sock *msk; struct nlattr *token; int ret = -EINVAL; struct sock *sk; void *hdr; - bitmap = (struct id_bitmap *)cb->ctx; + bitmap = (struct mptcp_id_bitmap *)cb->ctx; token = info->attrs[MPTCP_PM_ATTR_TOKEN]; msk = mptcp_token_get_sock(net, nla_get_u32(token)); diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index c3942416fa3a..ef50ef0c0829 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -211,6 +211,10 @@ enum mptcp_addr_signal_status { /* max value of mptcp_addr_info.id */ #define MPTCP_PM_MAX_ADDR_ID U8_MAX +struct mptcp_id_bitmap { + DECLARE_BITMAP(map, MPTCP_PM_MAX_ADDR_ID + 1); +}; + struct mptcp_pm_data { struct mptcp_addr_info local; struct mptcp_addr_info remote; @@ -231,7 +235,7 @@ struct mptcp_pm_data { u8 pm_type; u8 subflows; u8 status; - DECLARE_BITMAP(id_avail_bitmap, MPTCP_PM_MAX_ADDR_ID + 1); + struct mptcp_id_bitmap id_avail_bitmap; struct mptcp_rm_list rm_list_tx; struct mptcp_rm_list rm_list_rx; };

[mptcp-next,v3,01/10] mptcp: add struct mptcp_id_bitmap

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