From: Andreas Schultz <aschultz@tpip.net>
To: Pablo Neira <pablo@netfilter.org>
Cc: netdev@vger.kernel.org, Harald Welte <laforge@gnumonks.org>,
Lionel Gauthier <Lionel.Gauthier@eurecom.fr>,
openbsc@lists.osmocom.org
Subject: [PATCH 05/17] gtp: unify genl_find_pdp and prepare for per socket lookup
Date: Mon, 23 Jan 2017 12:56:54 +0100 [thread overview]
Message-ID: <20170123115706.4354-6-aschultz@tpip.net> (raw)
In-Reply-To: <20170123115706.4354-1-aschultz@tpip.net>
TEID are unique per socket and not per network device. Therefore
the API needs to be changed here.
Signed-off-by: Andreas Schultz <aschultz@tpip.net>
---
drivers/net/gtp.c | 99 +++++++++++++++++--------------------------------------
1 file changed, 31 insertions(+), 68 deletions(-)
diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c
index e95c856..7a3c5f6 100644
--- a/drivers/net/gtp.c
+++ b/drivers/net/gtp.c
@@ -1044,56 +1044,61 @@ static int gtp_genl_new_pdp(struct sk_buff *skb, struct genl_info *info)
return ipv4_pdp_add(dev, info);
}
-static int gtp_genl_del_pdp(struct sk_buff *skb, struct genl_info *info)
+static struct pdp_ctx *gtp_genl_find_pdp_by_link(struct sk_buff *skb,
+ struct genl_info *info)
{
struct net_device *dev;
- struct pdp_ctx *pctx;
struct gtp_dev *gtp;
struct net *net;
+ __be32 ms_addr;
- if (!info->attrs[GTPA_VERSION] ||
- !info->attrs[GTPA_LINK])
- return -EINVAL;
+ if (!info->attrs[GTPA_MS_ADDRESS])
+ return ERR_PTR(-EINVAL);
+ ms_addr = nla_get_be32(info->attrs[GTPA_MS_ADDRESS]);
net = gtp_genl_get_net(sock_net(skb->sk), info->attrs);
if (IS_ERR(net))
- return PTR_ERR(net);
+ return ERR_PTR(PTR_ERR(net));
/* Check if there's an existing gtpX device to configure */
dev = gtp_find_dev(net, nla_get_u32(info->attrs[GTPA_LINK]));
if (dev == NULL) {
put_net(net);
- return -ENODEV;
+ return ERR_PTR(-ENODEV);
}
put_net(net);
gtp = netdev_priv(dev);
- switch (nla_get_u32(info->attrs[GTPA_VERSION])) {
- case GTP_V0:
- if (!info->attrs[GTPA_TID])
- return -EINVAL;
- pctx = gtp0_pdp_find(gtp, nla_get_u64(info->attrs[GTPA_TID]));
- break;
- case GTP_V1:
- if (!info->attrs[GTPA_I_TEI])
- return -EINVAL;
- pctx = gtp1_pdp_find(gtp, nla_get_u64(info->attrs[GTPA_I_TEI]));
- break;
+ return ipv4_pdp_find(gtp, ms_addr);
+}
- default:
+static struct pdp_ctx *gtp_genl_find_pdp(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ if (info->attrs[GTPA_LINK])
+ return gtp_genl_find_pdp_by_link(skb, info);
+ else
+ return ERR_PTR(-EINVAL);
+}
+
+static int gtp_genl_del_pdp(struct sk_buff *skb, struct genl_info *info)
+{
+ struct pdp_ctx *pctx;
+
+ if (!info->attrs[GTPA_VERSION])
return -EINVAL;
- }
+ pctx = gtp_genl_find_pdp(skb, info);
if (IS_ERR(pctx))
return PTR_ERR(pctx);
if (pctx->gtp_version == GTP_V0)
- netdev_dbg(dev, "GTPv0-U: deleting tunnel id = %llx (pdp %p)\n",
- pctx->u.v0.tid, pctx);
+ pr_debug("GTPv0-U: deleting tunnel id = %llx (pdp %p)\n",
+ pctx->u.v0.tid, pctx);
else if (pctx->gtp_version == GTP_V1)
- netdev_dbg(dev, "GTPv1-U: deleting tunnel id = %x/%x (pdp %p)\n",
- pctx->u.v1.i_tei, pctx->u.v1.o_tei, pctx);
+ pr_debug("GTPv1-U: deleting tunnel id = %x/%x (pdp %p)\n",
+ pctx->u.v1.i_tei, pctx->u.v1.o_tei, pctx);
hlist_del_rcu(&pctx->hlist_tid);
hlist_del_rcu(&pctx->hlist_addr);
@@ -1143,57 +1148,15 @@ static int gtp_genl_fill_info(struct sk_buff *skb, u32 snd_portid, u32 snd_seq,
static int gtp_genl_get_pdp(struct sk_buff *skb, struct genl_info *info)
{
struct pdp_ctx *pctx = NULL;
- struct net_device *dev;
struct sk_buff *skb2;
- struct gtp_dev *gtp;
- u32 gtp_version;
- struct net *net;
int err;
- if (!info->attrs[GTPA_VERSION] ||
- !info->attrs[GTPA_LINK])
- return -EINVAL;
-
- gtp_version = nla_get_u32(info->attrs[GTPA_VERSION]);
- switch (gtp_version) {
- case GTP_V0:
- case GTP_V1:
- break;
- default:
+ if (!info->attrs[GTPA_VERSION])
return -EINVAL;
- }
-
- net = gtp_genl_get_net(sock_net(skb->sk), info->attrs);
- if (IS_ERR(net))
- return PTR_ERR(net);
-
- /* Check if there's an existing gtpX device to configure */
- dev = gtp_find_dev(net, nla_get_u32(info->attrs[GTPA_LINK]));
- if (dev == NULL) {
- put_net(net);
- return -ENODEV;
- }
- put_net(net);
-
- gtp = netdev_priv(dev);
rcu_read_lock();
- if (gtp_version == GTP_V0 &&
- info->attrs[GTPA_TID]) {
- u64 tid = nla_get_u64(info->attrs[GTPA_TID]);
-
- pctx = gtp0_pdp_find(gtp, tid);
- } else if (gtp_version == GTP_V1 &&
- info->attrs[GTPA_I_TEI]) {
- u32 tid = nla_get_u32(info->attrs[GTPA_I_TEI]);
-
- pctx = gtp1_pdp_find(gtp, tid);
- } else if (info->attrs[GTPA_MS_ADDRESS]) {
- __be32 ip = nla_get_be32(info->attrs[GTPA_MS_ADDRESS]);
-
- pctx = ipv4_pdp_find(gtp, ip);
- }
+ pctx = gtp_genl_find_pdp(skb, info);
if (IS_ERR(pctx)) {
err = PTR_ERR(pctx);
goto err_unlock;
--
2.10.2
next prev parent reply other threads:[~2017-01-23 12:06 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-23 11:56 [PATCH 00/17] gtp: fixes and support multiple VRF's per GTP socket Andreas Schultz
2017-01-23 11:56 ` [PATCH 01/17] gtp: add genl family modules alias Andreas Schultz
2017-01-23 11:56 ` [PATCH 02/17] gtp: clear DF bit on GTP packet tx Andreas Schultz
2017-01-23 11:56 ` [PATCH 03/17] gtp: make GTP sockets in gtp_newlink optional Andreas Schultz
2017-01-23 11:56 ` [PATCH 04/17] gtp: return error ptr in find pdp helpers Andreas Schultz
2017-01-23 11:56 ` Andreas Schultz [this message]
2017-01-23 11:56 ` [PATCH 06/17] gtp: fix cross netns recv on gtp socket Andreas Schultz
2017-01-23 11:56 ` [PATCH 07/17] gtp: remove unnecessary rcu_read_lock Andreas Schultz
2017-01-23 11:56 ` [PATCH 08/17] gtp: consolidate pdp context destruction into helper Andreas Schultz
2017-01-23 11:56 ` [PATCH 09/17] gtp: use addr_hash when traversing pdp contexts Andreas Schultz
2017-01-23 11:56 ` [PATCH 10/17] gtp: add socket to pdp context Andreas Schultz
2017-01-23 11:57 ` [PATCH 11/17] gtp: consolidate gtp socket rx path Andreas Schultz
2017-01-23 11:57 ` [PATCH 12/17] gtp: let userspace handle packets for invalid tunnels Andreas Schultz
2017-01-23 11:57 ` [PATCH 13/17] gtp: replace netdev_dbg and KERN_DEBUG printk with pr_debug Andreas Schultz
2017-01-23 11:57 ` [PATCH 14/17] gtp: move TEID hash to per socket structure Andreas Schultz
2017-01-23 11:57 ` [PATCH 15/17] gtp: rename gtp hashtable helpers Andreas Schultz
2017-01-23 11:57 ` [PATCH 16/17] gtp: add genl cmd to enable GTP encapsulation on UDP socket Andreas Schultz
2017-01-23 11:57 ` [PATCH 17/17] gtp: add support to select a GTP socket during PDP context creation Andreas Schultz
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