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| author |   Moses Reuben <mosesr@mellanox.com> | 2017-01-18 14:59:49 +0200 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2017-02-14 10:21:01 -0500 |
| commit | 94e03f11ad1f8c947b69fa187412ff04783b2a96 (patch) | |
| tree | cbab4a9e11663719c89915e3cdcadef135134b21 /drivers/infiniband/core | |
| parent | IB/core: Introduce flow tag specification (diff) | |
| download | linux-dev-94e03f11ad1f8c947b69fa187412ff04783b2a96.tar.xz linux-dev-94e03f11ad1f8c947b69fa187412ff04783b2a96.zip | |
IB/uverbs: Add support for flow tag
The struct ib_uverbs_flow_spec_action_tag associates a tag_id with the
flow defined by any number of other flow_spec entries which can reference
L2, L3, and L4 packet contents.
Use of ib_uverbs_flow_spec_action_tag allows the consumer to identify
the set of rules which where matched by
the packet by examining the tag_id in the CQE.
Signed-off-by: Moses Reuben <mosesr@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/core')
| -rw-r--r-- | drivers/infiniband/core/uverbs.h | 1 | ||||
| -rw-r--r-- | drivers/infiniband/core/uverbs_cmd.c | 35 |
2 files changed, 34 insertions, 2 deletions
diff --git a/drivers/infiniband/core/uverbs.h b/drivers/infiniband/core/uverbs.h index 455034ac994e..e1bedf0bac04 100644 --- a/drivers/infiniband/core/uverbs.h +++ b/drivers/infiniband/core/uverbs.h @@ -228,6 +228,7 @@ struct ib_uverbs_flow_spec { struct ib_uverbs_flow_spec_ipv4 ipv4; struct ib_uverbs_flow_spec_tcp_udp tcp_udp; struct ib_uverbs_flow_spec_ipv6 ipv6; + struct ib_uverbs_flow_spec_action_tag flow_tag; }; }; diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c index 700782203483..0834dce0a490 100644 --- a/drivers/infiniband/core/uverbs_cmd.c +++ b/drivers/infiniband/core/uverbs_cmd.c @@ -3143,6 +3143,25 @@ out_put: return ret ? ret : in_len; } +static int kern_spec_to_ib_spec_action(struct ib_uverbs_flow_spec *kern_spec, + union ib_flow_spec *ib_spec) +{ + ib_spec->type = kern_spec->type; + switch (ib_spec->type) { + case IB_FLOW_SPEC_ACTION_TAG: + if (kern_spec->flow_tag.size != + sizeof(struct ib_uverbs_flow_spec_action_tag)) + return -EINVAL; + + ib_spec->flow_tag.size = sizeof(struct ib_flow_spec_action_tag); + ib_spec->flow_tag.tag_id = kern_spec->flow_tag.tag_id; + break; + default: + return -EINVAL; + } + return 0; +} + static size_t kern_spec_filter_sz(struct ib_uverbs_flow_spec_hdr *spec) { /* Returns user space filter size, includes padding */ @@ -3167,8 +3186,8 @@ static ssize_t spec_filter_size(void *kern_spec_filter, u16 kern_filter_size, return kern_filter_size; } -static int kern_spec_to_ib_spec(struct ib_uverbs_flow_spec *kern_spec, - union ib_flow_spec *ib_spec) +static int kern_spec_to_ib_spec_filter(struct ib_uverbs_flow_spec *kern_spec, + union ib_flow_spec *ib_spec) { ssize_t actual_filter_sz; ssize_t kern_filter_sz; @@ -3263,6 +3282,18 @@ static int kern_spec_to_ib_spec(struct ib_uverbs_flow_spec *kern_spec, return 0; } +static int kern_spec_to_ib_spec(struct ib_uverbs_flow_spec *kern_spec, + union ib_flow_spec *ib_spec) +{ + if (kern_spec->reserved) + return -EINVAL; + + if (kern_spec->type >= IB_FLOW_SPEC_ACTION_TAG) + return kern_spec_to_ib_spec_action(kern_spec, ib_spec); + else + return kern_spec_to_ib_spec_filter(kern_spec, ib_spec); +} + int ib_uverbs_ex_create_wq(struct ib_uverbs_file *file, struct ib_device *ib_dev, struct ib_udata *ucore, |