[ipsec-next,v13,05/15] xfrm: add generic iptfs defines and functionality

Message ID	20241105083759.2172771-6-chopps@chopps.org (mailing list archive)
State	New
Delegated to:	Netdev Maintainers
Headers	show Received: from smtp.chopps.org (smtp.chopps.org [54.88.81.56]) by smtp.subspace.kernel.org (Postfix) with ESMTP id DA9E21CF295 for <netdev@vger.kernel.org>; Tue, 5 Nov 2024 08:38:30 +0000 (UTC) From: Christian Hopps <chopps@chopps.org> To: devel@linux-ipsec.org Cc: Steffen Klassert <steffen.klassert@secunet.com>, netdev@vger.kernel.org, Florian Westphal <fw@strlen.de>, Sabrina Dubroca <sd@queasysnail.net>, Simon Horman <horms@kernel.org>, Antony Antony <antony@phenome.org>, Christian Hopps <chopps@chopps.org>, Christian Hopps <chopps@labn.net> Subject: [PATCH ipsec-next v13 05/15] xfrm: add generic iptfs defines and functionality Date: Tue, 5 Nov 2024 03:37:49 -0500 Message-ID: <20241105083759.2172771-6-chopps@chopps.org> In-Reply-To: <20241105083759.2172771-1-chopps@chopps.org> References: <20241105083759.2172771-1-chopps@chopps.org> Precedence: bulk MIME-Version: 1.0 Content-Transfer-Encoding: 8bit
Series	Add IP-TFS mode to xfrm \| expand [ipsec-next,v13,00/15] Add IP-TFS mode to xfrm [ipsec-next,v13,01/15] xfrm: config: add CONFIG_XFRM_IPTFS [ipsec-next,v13,02/15] include: uapi: protocol number and packet structs for AGGFRAG in ESP [ipsec-next,v13,03/15] xfrm: netlink: add config (netlink) options [ipsec-next,v13,04/15] xfrm: add mode_cbs module functionality [ipsec-next,v13,05/15] xfrm: add generic iptfs defines and functionality [ipsec-next,v13,06/15] xfrm: iptfs: add new iptfs xfrm mode impl [ipsec-next,v13,07/15] xfrm: iptfs: add user packet (tunnel ingress) handling [ipsec-next,v13,08/15] xfrm: iptfs: share page fragments of inner packets [ipsec-next,v13,09/15] xfrm: iptfs: add fragmenting of larger than MTU user packets [ipsec-next,v13,10/15] xfrm: iptfs: add basic receive packet (tunnel egress) handling [ipsec-next,v13,11/15] xfrm: iptfs: handle received fragmented inner packets [ipsec-next,v13,12/15] xfrm: iptfs: add reusing received skb for the tunnel egress packet [ipsec-next,v13,13/15] xfrm: iptfs: add skb-fragment sharing code [ipsec-next,v13,14/15] xfrm: iptfs: handle reordering of received packets [ipsec-next,v13,15/15] xfrm: iptfs: add tracepoint functionality

Context	Check	Description
netdev/tree_selection	success	Guessing tree name failed - patch did not apply

diff --git a/include/net/xfrm.h b/include/net/xfrm.h index 945d14568a16..3e6158bcf645 100644 --- a/include/net/xfrm.h +++ b/include/net/xfrm.h @@ -37,6 +37,7 @@ #define XFRM_PROTO_COMP 108 #define XFRM_PROTO_IPIP 4 #define XFRM_PROTO_IPV6 41 +#define XFRM_PROTO_IPTFS IPPROTO_AGGFRAG #define XFRM_PROTO_ROUTING IPPROTO_ROUTING #define XFRM_PROTO_DSTOPTS IPPROTO_DSTOPTS diff --git a/include/uapi/linux/ipsec.h b/include/uapi/linux/ipsec.h index 50d8ee1791e2..696b790f4346 100644 --- a/include/uapi/linux/ipsec.h +++ b/include/uapi/linux/ipsec.h @@ -14,7 +14,8 @@ enum { IPSEC_MODE_ANY = 0, /* We do not support this for SA */ IPSEC_MODE_TRANSPORT = 1, IPSEC_MODE_TUNNEL = 2, - IPSEC_MODE_BEET = 3 + IPSEC_MODE_BEET = 3, + IPSEC_MODE_IPTFS = 4 }; enum { diff --git a/include/uapi/linux/snmp.h b/include/uapi/linux/snmp.h index adf5fd78dd50..5a2553511190 100644 --- a/include/uapi/linux/snmp.h +++ b/include/uapi/linux/snmp.h @@ -339,6 +339,8 @@ enum LINUX_MIB_XFRMACQUIREERROR, /* XfrmAcquireError */ LINUX_MIB_XFRMOUTSTATEDIRERROR, /* XfrmOutStateDirError */ LINUX_MIB_XFRMINSTATEDIRERROR, /* XfrmInStateDirError */ + LINUX_MIB_XFRMINIPTFSERROR, /* XfrmInIptfsError */ + LINUX_MIB_XFRMOUTNOQSPACE, /* XfrmOutNoQueueSpace */ __LINUX_MIB_XFRMMAX }; diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c index f3281312eb5e..b0fbf804bbba 100644 --- a/net/ipv4/esp4.c +++ b/net/ipv4/esp4.c @@ -816,7 +816,8 @@ int esp_input_done2(struct sk_buff *skb, int err) } skb_pull_rcsum(skb, hlen); - if (x->props.mode == XFRM_MODE_TUNNEL) + if (x->props.mode == XFRM_MODE_TUNNEL || + x->props.mode == XFRM_MODE_IPTFS) skb_reset_transport_header(skb); else skb_set_transport_header(skb, -ihl); diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c index b2400c226a32..5f3d0cc1555a 100644 --- a/net/ipv6/esp6.c +++ b/net/ipv6/esp6.c @@ -859,7 +859,8 @@ int esp6_input_done2(struct sk_buff *skb, int err) skb_postpull_rcsum(skb, skb_network_header(skb), skb_network_header_len(skb)); skb_pull_rcsum(skb, hlen); - if (x->props.mode == XFRM_MODE_TUNNEL) + if (x->props.mode == XFRM_MODE_TUNNEL || + x->props.mode == XFRM_MODE_IPTFS) skb_reset_transport_header(skb); else skb_set_transport_header(skb, -hdr_len); diff --git a/net/netfilter/nft_xfrm.c b/net/netfilter/nft_xfrm.c index 8a07b46cc8fb..3210cfc966ab 100644 --- a/net/netfilter/nft_xfrm.c +++ b/net/netfilter/nft_xfrm.c @@ -112,7 +112,8 @@ static bool xfrm_state_addr_ok(enum nft_xfrm_keys k, u8 family, u8 mode) return true; } - return mode == XFRM_MODE_BEET || mode == XFRM_MODE_TUNNEL; + return mode == XFRM_MODE_BEET || mode == XFRM_MODE_TUNNEL || + mode == XFRM_MODE_IPTFS; } static void nft_xfrm_state_get_key(const struct nft_xfrm *priv, diff --git a/net/xfrm/xfrm_device.c b/net/xfrm/xfrm_device.c index 1fe1b07d879d..d1fa94e52cea 100644 --- a/net/xfrm/xfrm_device.c +++ b/net/xfrm/xfrm_device.c @@ -69,6 +69,7 @@ static void __xfrm_mode_beet_prep(struct xfrm_state *x, struct sk_buff *skb, static void xfrm_outer_mode_prep(struct xfrm_state *x, struct sk_buff *skb) { switch (x->outer_mode.encap) { + case XFRM_MODE_IPTFS: case XFRM_MODE_TUNNEL: if (x->outer_mode.family == AF_INET) return __xfrm_mode_tunnel_prep(x, skb, diff --git a/net/xfrm/xfrm_output.c b/net/xfrm/xfrm_output.c index ef81359e4038..b5025cf6136e 100644 --- a/net/xfrm/xfrm_output.c +++ b/net/xfrm/xfrm_output.c @@ -677,6 +677,10 @@ static void xfrm_get_inner_ipproto(struct sk_buff *skb, struct xfrm_state *x) return; } + if (x->outer_mode.encap == XFRM_MODE_IPTFS) { + xo->inner_ipproto = IPPROTO_AGGFRAG; + return; + } /* non-Tunnel Mode */ if (!skb->encapsulation) diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c index 7f5176b2a7b1..aeadcc905831 100644 --- a/net/xfrm/xfrm_policy.c +++ b/net/xfrm/xfrm_policy.c @@ -2497,6 +2497,7 @@ xfrm_tmpl_resolve_one(struct xfrm_policy *policy, const struct flowi *fl, struct xfrm_tmpl *tmpl = &policy->xfrm_vec[i]; if (tmpl->mode == XFRM_MODE_TUNNEL || + tmpl->mode == XFRM_MODE_IPTFS || tmpl->mode == XFRM_MODE_BEET) { remote = &tmpl->id.daddr; local = &tmpl->saddr; @@ -3294,7 +3295,8 @@ struct dst_entry *xfrm_lookup_with_ifid(struct net *net, ok: xfrm_pols_put(pols, drop_pols); if (dst && dst->xfrm && - dst->xfrm->props.mode == XFRM_MODE_TUNNEL) + (dst->xfrm->props.mode == XFRM_MODE_TUNNEL || + dst->xfrm->props.mode == XFRM_MODE_IPTFS)) dst->flags |= DST_XFRM_TUNNEL; return dst; @@ -4523,6 +4525,7 @@ static int migrate_tmpl_match(const struct xfrm_migrate *m, const struct xfrm_tm switch (t->mode) { case XFRM_MODE_TUNNEL: case XFRM_MODE_BEET: + case XFRM_MODE_IPTFS: if (xfrm_addr_equal(&t->id.daddr, &m->old_daddr, m->old_family) && xfrm_addr_equal(&t->saddr, &m->old_saddr, @@ -4565,7 +4568,8 @@ static int xfrm_policy_migrate(struct xfrm_policy *pol, continue; n++; if (pol->xfrm_vec[i].mode != XFRM_MODE_TUNNEL && - pol->xfrm_vec[i].mode != XFRM_MODE_BEET) + pol->xfrm_vec[i].mode != XFRM_MODE_BEET && + pol->xfrm_vec[i].mode != XFRM_MODE_IPTFS) continue; /* update endpoints */ memcpy(&pol->xfrm_vec[i].id.daddr, &mp->new_daddr, diff --git a/net/xfrm/xfrm_proc.c b/net/xfrm/xfrm_proc.c index eeb984be03a7..8e07dd614b0b 100644 --- a/net/xfrm/xfrm_proc.c +++ b/net/xfrm/xfrm_proc.c @@ -43,6 +43,8 @@ static const struct snmp_mib xfrm_mib_list[] = { SNMP_MIB_ITEM("XfrmAcquireError", LINUX_MIB_XFRMACQUIREERROR), SNMP_MIB_ITEM("XfrmOutStateDirError", LINUX_MIB_XFRMOUTSTATEDIRERROR), SNMP_MIB_ITEM("XfrmInStateDirError", LINUX_MIB_XFRMINSTATEDIRERROR), + SNMP_MIB_ITEM("XfrmInIptfsError", LINUX_MIB_XFRMINIPTFSERROR), + SNMP_MIB_ITEM("XfrmOutNoQueueSpace", LINUX_MIB_XFRMOUTNOQSPACE), SNMP_MIB_SENTINEL }; diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c index 55e8ba0a4244..0a44a8d6390e 100644 --- a/net/xfrm/xfrm_state.c +++ b/net/xfrm/xfrm_state.c @@ -467,6 +467,11 @@ static const struct xfrm_mode xfrm4_mode_map[XFRM_MODE_MAX] = { .flags = XFRM_MODE_FLAG_TUNNEL, .family = AF_INET, }, + [XFRM_MODE_IPTFS] = { + .encap = XFRM_MODE_IPTFS, + .flags = XFRM_MODE_FLAG_TUNNEL, + .family = AF_INET, + }, }; static const struct xfrm_mode xfrm6_mode_map[XFRM_MODE_MAX] = { @@ -488,6 +493,11 @@ static const struct xfrm_mode xfrm6_mode_map[XFRM_MODE_MAX] = { .flags = XFRM_MODE_FLAG_TUNNEL, .family = AF_INET6, }, + [XFRM_MODE_IPTFS] = { + .encap = XFRM_MODE_IPTFS, + .flags = XFRM_MODE_FLAG_TUNNEL, + .family = AF_INET6, + }, }; static const struct xfrm_mode *xfrm_get_mode(unsigned int encap, int family) @@ -2333,6 +2343,7 @@ static int __xfrm6_state_sort_cmp(const void *p) #endif case XFRM_MODE_TUNNEL: case XFRM_MODE_BEET: + case XFRM_MODE_IPTFS: return 4; } return 5; @@ -2359,6 +2370,7 @@ static int __xfrm6_tmpl_sort_cmp(const void *p) #endif case XFRM_MODE_TUNNEL: case XFRM_MODE_BEET: + case XFRM_MODE_IPTFS: return 3; } return 4; diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index b8da81e80027..ad5a233d9b77 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -383,6 +383,16 @@ static int verify_newsa_info(struct xfrm_usersa_info *p, case XFRM_MODE_ROUTEOPTIMIZATION: case XFRM_MODE_BEET: break; + case XFRM_MODE_IPTFS: + if (p->id.proto != IPPROTO_ESP) { + NL_SET_ERR_MSG(extack, "IP-TFS mode only supported with ESP"); + goto out; + } + if (sa_dir == 0) { + NL_SET_ERR_MSG(extack, "IP-TFS mode requires in or out direction attribute"); + goto out; + } + break; default: NL_SET_ERR_MSG(extack, "Unsupported mode"); @@ -2016,6 +2026,8 @@ static int validate_tmpl(int nr, struct xfrm_user_tmpl *ut, u16 family, return -EINVAL; } break; + case XFRM_MODE_IPTFS: + break; default: if (ut[i].family != prev_family) { NL_SET_ERR_MSG(extack, "Mode in template doesn't support a family change");

[ipsec-next,v13,05/15] xfrm: add generic iptfs defines and functionality

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