[PATCH v2 04/18] gtp: return error ptr in find pdp helpers

Signed-off-by: Andreas Schultz <aschultz(a)tpip.net> --- drivers/net/gtp.c | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c index 60946b7..e95c856 100644 --- a/drivers/net/gtp.c +++ b/drivers/net/gtp.c @@ -114,7 +114,7 @@ static struct pdp_ctx *gtp0_pdp_find(struct gtp_dev *gtp, u64 tid) pdp->u.v0.tid == tid) return pdp; } - return NULL; + return ERR_PTR(-ENOENT); } /* Resolve a PDP context structure based on the 32bit TEI. */ @@ -130,7 +130,7 @@ static struct pdp_ctx *gtp1_pdp_find(struct gtp_dev *gtp, u32 tid) pdp->u.v1.i_tei == tid) return pdp; } - return NULL; + return ERR_PTR(-ENOENT); } /* Resolve a PDP context based on IPv4 address of MS. */ @@ -147,7 +147,7 @@ static struct pdp_ctx *ipv4_pdp_find(struct gtp_dev *gtp, __be32 ms_addr) return pdp; } - return NULL; + return ERR_PTR(-ENOENT); } static bool gtp_check_src_ms_ipv4(struct sk_buff *skb, struct pdp_ctx *pctx, @@ -199,7 +199,7 @@ static int gtp0_udp_encap_recv(struct gtp_dev *gtp, struct sk_buff *skb, rcu_read_lock(); pctx = gtp0_pdp_find(gtp, be64_to_cpu(gtp0->tid)); - if (!pctx) { + if (IS_ERR(pctx)) { netdev_dbg(gtp->dev, "No PDP ctx to decap skb=%p\n", skb); ret = -1; goto out_rcu; @@ -256,7 +256,7 @@ static int gtp1u_udp_encap_recv(struct gtp_dev *gtp, struct sk_buff *skb, rcu_read_lock(); pctx = gtp1_pdp_find(gtp, ntohl(gtp1->tid)); - if (!pctx) { + if (IS_ERR(pctx)) { netdev_dbg(gtp->dev, "No PDP ctx to decap skb=%p\n", skb); ret = -1; goto out_rcu; @@ -476,10 +476,10 @@ static int gtp_build_skb_ip4(struct sk_buff *skb, struct net_device *dev, */ iph = ip_hdr(skb); pctx = ipv4_pdp_find(gtp, iph->daddr); - if (!pctx) { + if (IS_ERR(pctx)) { netdev_dbg(dev, "no PDP ctx found for %pI4, skip\n", &iph->daddr); - return -ENOENT; + return PTR_ERR(pctx); } netdev_dbg(dev, "found PDP context %p\n", pctx); @@ -1085,8 +1085,8 @@ static int gtp_genl_del_pdp(struct sk_buff *skb, struct genl_info *info) return -EINVAL; } - if (pctx == NULL) - return -ENOENT; + 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", @@ -1194,8 +1194,8 @@ static int gtp_genl_get_pdp(struct sk_buff *skb, struct genl_info *info) pctx = ipv4_pdp_find(gtp, ip); } - if (pctx == NULL) { - err = -ENOENT; + if (IS_ERR(pctx)) { + err = PTR_ERR(pctx); goto err_unlock; } -- 2.10.2