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osmocom-net-gprs
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osmocom-net-gprs@lists.osmocom.org
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[PATCH] net: set NLM_F_MULTI flag in gtp_genl_dump_pdp()
by Yoshiyuki Kurauchi
In drivers/net/gtp.c, gtp_genl_dump_pdp() should set NLM_F_MULTI flag since it returns multipart message. This patch adds a new arg "flags" in gtp_genl_fill_info() so that flags can be set by the callers. Signed-off-by: Yoshiyuki Kurauchi <ahochauwaaaaa(a)gmail.com> --- drivers/net/gtp.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c index 672cd2caf2fb..10fa731bae6d 100644 --- a/drivers/net/gtp.c +++ b/drivers/net/gtp.c @@ -1097,7 +1097,7 @@ static int gtp_genl_new_pdp(struct sk_buff *skb, struct genl_info *info) } static struct pdp_ctx *gtp_find_pdp_by_link(struct net *net, - struct nlattr *nla[]) + struct nlattr *nla[]) { struct gtp_dev *gtp; @@ -1169,11 +1169,11 @@ static int gtp_genl_del_pdp(struct sk_buff *skb, struct genl_info *info) static struct genl_family gtp_genl_family; static int gtp_genl_fill_info(struct sk_buff *skb, u32 snd_portid, u32 snd_seq, - u32 type, struct pdp_ctx *pctx) + int flags, u32 type, struct pdp_ctx *pctx) { void *genlh; - genlh = genlmsg_put(skb, snd_portid, snd_seq, >p_genl_family, 0, + genlh = genlmsg_put(skb, snd_portid, snd_seq, >p_genl_family, flags, type); if (genlh == NULL) goto nlmsg_failure; @@ -1227,8 +1227,8 @@ static int gtp_genl_get_pdp(struct sk_buff *skb, struct genl_info *info) goto err_unlock; } - err = gtp_genl_fill_info(skb2, NETLINK_CB(skb).portid, - info->snd_seq, info->nlhdr->nlmsg_type, pctx); + err = gtp_genl_fill_info(skb2, NETLINK_CB(skb).portid, info->snd_seq, + info->nlhdr->nlmsg_flags, info->nlhdr->nlmsg_type, pctx); if (err < 0) goto err_unlock_free; @@ -1271,6 +1271,7 @@ static int gtp_genl_dump_pdp(struct sk_buff *skb, gtp_genl_fill_info(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, + NLM_F_MULTI, cb->nlh->nlmsg_type, pctx)) { cb->args[0] = i; cb->args[1] = j; -- 2.17.1
4 years, 2 months
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[PATCH] net: set NLM_F_MULTI flag in gtp_genl_dump_pdp() In drivers/net/gtp.c, gtp_genl_dump_pdp() should set NLM_F_MULTI flag since it returns multipart message. This patch adds a new arg "flags" in gtp_genl_fill_info() so that flags can be set by the callers.
by Yoshiyuki Kurauchi
Signed-off-by: Yoshiyuki Kurauchi <ahochauwaaaaa(a)gmail.com> --- drivers/net/gtp.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c index 672cd2caf2fb..10fa731bae6d 100644 --- a/drivers/net/gtp.c +++ b/drivers/net/gtp.c @@ -1097,7 +1097,7 @@ static int gtp_genl_new_pdp(struct sk_buff *skb, struct genl_info *info) } static struct pdp_ctx *gtp_find_pdp_by_link(struct net *net, - struct nlattr *nla[]) + struct nlattr *nla[]) { struct gtp_dev *gtp; @@ -1169,11 +1169,11 @@ static int gtp_genl_del_pdp(struct sk_buff *skb, struct genl_info *info) static struct genl_family gtp_genl_family; static int gtp_genl_fill_info(struct sk_buff *skb, u32 snd_portid, u32 snd_seq, - u32 type, struct pdp_ctx *pctx) + int flags, u32 type, struct pdp_ctx *pctx) { void *genlh; - genlh = genlmsg_put(skb, snd_portid, snd_seq, >p_genl_family, 0, + genlh = genlmsg_put(skb, snd_portid, snd_seq, >p_genl_family, flags, type); if (genlh == NULL) goto nlmsg_failure; @@ -1227,8 +1227,8 @@ static int gtp_genl_get_pdp(struct sk_buff *skb, struct genl_info *info) goto err_unlock; } - err = gtp_genl_fill_info(skb2, NETLINK_CB(skb).portid, - info->snd_seq, info->nlhdr->nlmsg_type, pctx); + err = gtp_genl_fill_info(skb2, NETLINK_CB(skb).portid, info->snd_seq, + info->nlhdr->nlmsg_flags, info->nlhdr->nlmsg_type, pctx); if (err < 0) goto err_unlock_free; @@ -1271,6 +1271,7 @@ static int gtp_genl_dump_pdp(struct sk_buff *skb, gtp_genl_fill_info(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, + NLM_F_MULTI, cb->nlh->nlmsg_type, pctx)) { cb->args[0] = i; cb->args[1] = j; -- 2.17.1
4 years, 2 months
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[PATCH net] gtp: use __GFP_NOWARN to avoid memalloc warning
by Taehee Yoo
gtp hashtable size is received by user-space. So, this hashtable size could be too large. If so, kmalloc will internally print a warning message. This warning message is actually not necessary for the gtp module. So, this patch adds __GFP_NOWARN to avoid this message. Splat looks like: [ 2171.200049][ T1860] WARNING: CPU: 1 PID: 1860 at mm/page_alloc.c:4713 __alloc_pages_nodemask+0x2f3/0x740 [ 2171.238885][ T1860] Modules linked in: gtp veth openvswitch nsh nf_conncount nf_nat nf_conntrack nf_defrag_ipv] [ 2171.262680][ T1860] CPU: 1 PID: 1860 Comm: gtp-link Not tainted 5.5.0+ #321 [ 2171.263567][ T1860] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006 [ 2171.264681][ T1860] RIP: 0010:__alloc_pages_nodemask+0x2f3/0x740 [ 2171.265332][ T1860] Code: 64 fe ff ff 65 48 8b 04 25 c0 0f 02 00 48 05 f0 12 00 00 41 be 01 00 00 00 49 89 47 0 [ 2171.267301][ T1860] RSP: 0018:ffff8880b51af1f0 EFLAGS: 00010246 [ 2171.268320][ T1860] RAX: ffffed1016a35e43 RBX: 0000000000000000 RCX: 0000000000000000 [ 2171.269517][ T1860] RDX: 0000000000000000 RSI: 000000000000000b RDI: 0000000000000000 [ 2171.270305][ T1860] RBP: 0000000000040cc0 R08: ffffed1018893109 R09: dffffc0000000000 [ 2171.275973][ T1860] R10: 0000000000000001 R11: ffffed1018893108 R12: 1ffff11016a35e43 [ 2171.291039][ T1860] R13: 000000000000000b R14: 000000000000000b R15: 00000000000f4240 [ 2171.292328][ T1860] FS: 00007f53cbc83740(0000) GS:ffff8880da000000(0000) knlGS:0000000000000000 [ 2171.293409][ T1860] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2171.294586][ T1860] CR2: 000055f540014508 CR3: 00000000b49f2004 CR4: 00000000000606e0 [ 2171.295424][ T1860] Call Trace: [ 2171.295756][ T1860] ? mark_held_locks+0xa5/0xe0 [ 2171.296659][ T1860] ? __alloc_pages_slowpath+0x21b0/0x21b0 [ 2171.298283][ T1860] ? gtp_encap_enable_socket+0x13e/0x400 [gtp] [ 2171.298962][ T1860] ? alloc_pages_current+0xc1/0x1a0 [ 2171.299475][ T1860] kmalloc_order+0x22/0x80 [ 2171.299936][ T1860] kmalloc_order_trace+0x1d/0x140 [ 2171.300437][ T1860] __kmalloc+0x302/0x3a0 [ 2171.300896][ T1860] gtp_newlink+0x293/0xba0 [gtp] [ ... ] Fixes: 459aa660eb1d ("gtp: add initial driver for datapath of GPRS Tunneling Protocol (GTP-U)") Signed-off-by: Taehee Yoo <ap420073(a)gmail.com> --- drivers/net/gtp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c index 7032a2405e1a..af07ea760b35 100644 --- a/drivers/net/gtp.c +++ b/drivers/net/gtp.c @@ -767,12 +767,12 @@ static int gtp_hashtable_new(struct gtp_dev *gtp, int hsize) int i; gtp->addr_hash = kmalloc_array(hsize, sizeof(struct hlist_head), - GFP_KERNEL); + GFP_KERNEL | __GFP_NOWARN); if (gtp->addr_hash == NULL) return -ENOMEM; gtp->tid_hash = kmalloc_array(hsize, sizeof(struct hlist_head), - GFP_KERNEL); + GFP_KERNEL | __GFP_NOWARN); if (gtp->tid_hash == NULL) goto err1; -- 2.17.1
4 years, 2 months
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