Messages in this thread Patch in this message | | | Subject | [PATCH 16/27] Add ib_create_ah_from_wc to IB verbs | From | Hal Rosenstock <> | Date | 11 Jul 2005 10:30:19 -0400 |
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Added new call: ib_create_ah_from_wc. Call will allocate an address handle given work completion information, including any received GRH.
Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Hal Rosenstock <halr@voltaire.com>
This patch depends on patch 15/27.
-- core/verbs.c | 35 +++++++++++++++++++++++++++++++++++ include/ib_mad.h | 9 -- include/ib_verbs.h | 24 ++++++++++++++++++++++++ 3 files changed, 59 insertions(+), 9 deletions(-) diff -uprN linux-2.6.13-rc2-mm1/drivers/infiniband15/core/verbs.c linux-2.6.13-rc2-mm1/drivers/infiniband16/core/verbs.c -- linux-2.6.13-rc2-mm1/drivers/infiniband15/core/verbs.c 2005-07-10 11:09:37.000000000 -0400 +++ linux-2.6.13-rc2-mm1/drivers/infiniband16/core/verbs.c 2005-07-10 11:43:44.000000000 -0400 @@ -41,6 +41,7 @@ #include <linux/err.h> #include <ib_verbs.h> +#include <ib_cache.h> /* Protection domains */ @@ -88,6 +89,40 @@ struct ib_ah *ib_create_ah(struct ib_pd } EXPORT_SYMBOL(ib_create_ah); +struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc, + struct ib_grh *grh, u8 port_num) +{ + struct ib_ah_attr ah_attr; + u32 flow_class; + u16 gid_index; + int ret; + + memset(&ah_attr, 0, sizeof ah_attr); + ah_attr.dlid = wc->slid; + ah_attr.sl = wc->sl; + ah_attr.src_path_bits = wc->dlid_path_bits; + ah_attr.port_num = port_num; + + if (wc->wc_flags & IB_WC_GRH) { + ah_attr.ah_flags = IB_AH_GRH; + ah_attr.grh.dgid = grh->dgid; + + ret = ib_find_cached_gid(pd->device, &grh->sgid, &port_num, + &gid_index); + if (ret) + return ERR_PTR(ret); + + ah_attr.grh.sgid_index = (u8) gid_index; + flow_class = be32_to_cpu(&grh->version_tclass_flow); + ah_attr.grh.flow_label = flow_class & 0xFFFFF; + ah_attr.grh.traffic_class = (flow_class >> 20) & 0xFF; + ah_attr.grh.hop_limit = grh->hop_limit; + } + + return ib_create_ah(pd, &ah_attr); +} +EXPORT_SYMBOL(ib_create_ah_from_wc); + int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) { return ah->device->modify_ah ? diff -uprN linux-2.6.13-rc2-mm1/drivers/infiniband15/include/ib_mad.h linux-2.6.13-rc2-mm1/drivers/infiniband16/include/ib_mad.h -- linux-2.6.13-rc2-mm1/drivers/infiniband15/include/ib_mad.h 2005-07-09 17:57:11.000000000 -0400 +++ linux-2.6.13-rc2-mm1/drivers/infiniband16/include/ib_mad.h 2005-07-10 11:43:45.000000000 -0400 @@ -77,15 +77,6 @@ #define IB_QP1_QKEY 0x80010000 #define IB_QP_SET_QKEY 0x80000000 -struct ib_grh { - u32 version_tclass_flow; - u16 paylen; - u8 next_hdr; - u8 hop_limit; - union ib_gid sgid; - union ib_gid dgid; -} __attribute__ ((packed)); - struct ib_mad_hdr { u8 base_version; u8 mgmt_class; diff -uprN linux-2.6.13-rc2-mm1/drivers/infiniband15/include/ib_verbs.h linux-2.6.13-rc2-mm1/drivers/infiniband16/include/ib_verbs.h -- linux-2.6.13-rc2-mm1/drivers/infiniband15/include/ib_verbs.h 2005-07-10 10:55:59.000000000 -0400 +++ linux-2.6.13-rc2-mm1/drivers/infiniband16/include/ib_verbs.h 2005-07-10 11:43:45.000000000 -0400 @@ -289,6 +289,15 @@ struct ib_global_route { u8 traffic_class; }; +struct ib_grh { + u32 version_tclass_flow; + u16 paylen; + u8 next_hdr; + u8 hop_limit; + union ib_gid sgid; + union ib_gid dgid; +}; + enum { IB_MULTICAST_QPN = 0xffffff }; @@ -991,6 +1000,21 @@ int ib_dealloc_pd(struct ib_pd *pd); struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr); /** + * ib_create_ah_from_wc - Creates an address handle associated with the + * sender of the specified work completion. + * @pd: The protection domain associated with the address handle. + * @wc: Work completion information associated with a received message. + * @grh: References the received global route header. This parameter is + * ignored unless the work completion indicates that the GRH is valid. + * @port_num: The outbound port number to associate with the address. + * + * The address handle is used to reference a local or global destination + * in all UD QP post sends. + */ +struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc, + struct ib_grh *grh, u8 port_num); + +/** * ib_modify_ah - Modifies the address vector associated with an address * handle. * @ah: The address handle to modify.
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