From: Shagun Agrawal Date: Fri, 29 Jun 2018 18:12:20 +0000 (+0530) Subject: net/cxgbe: support to delete flows in HASH region X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=41dc98b0827a;p=dpdk.git net/cxgbe: support to delete flows in HASH region Add interface to delete offloaded flows in HASH region. Use the hash index saved during insertion to delete the corresponding flow. Signed-off-by: Shagun Agrawal Signed-off-by: Rahul Lakkireddy --- diff --git a/drivers/net/cxgbe/base/t4_msg.h b/drivers/net/cxgbe/base/t4_msg.h index 4112ff2120..7f4c98fb63 100644 --- a/drivers/net/cxgbe/base/t4_msg.h +++ b/drivers/net/cxgbe/base/t4_msg.h @@ -8,7 +8,12 @@ enum { CPL_ACT_OPEN_REQ = 0x3, + CPL_SET_TCB_FIELD = 0x5, + CPL_ABORT_REQ = 0xA, + CPL_ABORT_RPL = 0xB, + CPL_TID_RELEASE = 0x1A, CPL_ACT_OPEN_RPL = 0x25, + CPL_ABORT_RPL_RSS = 0x2D, CPL_SET_TCB_RPL = 0x3A, CPL_ACT_OPEN_REQ6 = 0x83, CPL_SGE_EGR_UPDATE = 0xA5, @@ -27,6 +32,11 @@ enum { ULP_MODE_NONE = 0, }; +enum { + CPL_ABORT_SEND_RST = 0, + CPL_ABORT_NO_RST, +}; + enum { /* TX_PKT_XT checksum types */ TX_CSUM_TCPIP = 8, TX_CSUM_UDPIP = 9, @@ -189,6 +199,29 @@ struct cpl_act_open_rpl { #define M_AOPEN_ATID 0xFFFFFF #define G_AOPEN_ATID(x) (((x) >> S_AOPEN_ATID) & M_AOPEN_ATID) +struct cpl_set_tcb_field { + WR_HDR; + union opcode_tid ot; + __be16 reply_ctrl; + __be16 word_cookie; + __be64 mask; + __be64 val; +}; + +/* cpl_set_tcb_field.word_cookie fields */ +#define S_WORD 0 +#define V_WORD(x) ((x) << S_WORD) + +/* cpl_get_tcb.reply_ctrl fields */ +#define S_QUEUENO 0 +#define V_QUEUENO(x) ((x) << S_QUEUENO) + +#define S_REPLY_CHAN 14 +#define V_REPLY_CHAN(x) ((x) << S_REPLY_CHAN) + +#define S_NO_REPLY 15 +#define V_NO_REPLY(x) ((x) << S_NO_REPLY) + struct cpl_set_tcb_rpl { RSS_HDR union opcode_tid ot; @@ -198,6 +231,39 @@ struct cpl_set_tcb_rpl { __be64 oldval; }; +/* cpl_abort_req status command code + */ +struct cpl_abort_req { + WR_HDR; + union opcode_tid ot; + __be32 rsvd0; + __u8 rsvd1; + __u8 cmd; + __u8 rsvd2[6]; +}; + +struct cpl_abort_rpl_rss { + RSS_HDR + union opcode_tid ot; + __u8 rsvd[3]; + __u8 status; +}; + +struct cpl_abort_rpl { + WR_HDR; + union opcode_tid ot; + __be32 rsvd0; + __u8 rsvd1; + __u8 cmd; + __u8 rsvd2[6]; +}; + +struct cpl_tid_release { + WR_HDR; + union opcode_tid ot; + __be32 rsvd; +}; + struct cpl_tx_data { union opcode_tid ot; __be32 len; @@ -403,7 +469,13 @@ struct cpl_fw6_msg { __be64 data[4]; }; +/* ULP_TX opcodes */ +enum { + ULP_TX_PKT = 4 +}; + enum { + ULP_TX_SC_NOOP = 0x80, ULP_TX_SC_IMM = 0x81, ULP_TX_SC_DSGL = 0x82, ULP_TX_SC_ISGL = 0x83 diff --git a/drivers/net/cxgbe/base/t4_tcb.h b/drivers/net/cxgbe/base/t4_tcb.h new file mode 100644 index 0000000000..6d7f5e8c19 --- /dev/null +++ b/drivers/net/cxgbe/base/t4_tcb.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2018 Chelsio Communications. + * All rights reserved. + */ + +#ifndef _T4_TCB_DEFS_H +#define _T4_TCB_DEFS_H + +/* 105:96 */ +#define W_TCB_RSS_INFO 3 +#define S_TCB_RSS_INFO 0 +#define M_TCB_RSS_INFO 0x3ffULL +#define V_TCB_RSS_INFO(x) ((x) << S_TCB_RSS_INFO) + +#endif /* _T4_TCB_DEFS_H */ diff --git a/drivers/net/cxgbe/base/t4fw_interface.h b/drivers/net/cxgbe/base/t4fw_interface.h index 19bcfc1241..7b2f2d37f0 100644 --- a/drivers/net/cxgbe/base/t4fw_interface.h +++ b/drivers/net/cxgbe/base/t4fw_interface.h @@ -55,6 +55,7 @@ enum fw_memtype { enum fw_wr_opcodes { FW_FILTER_WR = 0x02, + FW_ULPTX_WR = 0x04, FW_TP_WR = 0x05, FW_ETH_TX_PKT_WR = 0x08, FW_ETH_TX_PKTS_WR = 0x09, @@ -78,6 +79,11 @@ struct fw_wr_hdr { #define V_FW_WR_OP(x) ((x) << S_FW_WR_OP) #define G_FW_WR_OP(x) (((x) >> S_FW_WR_OP) & M_FW_WR_OP) +/* atomic flag (hi) - firmware encapsulates CPLs in CPL_BARRIER + */ +#define S_FW_WR_ATOMIC 23 +#define V_FW_WR_ATOMIC(x) ((x) << S_FW_WR_ATOMIC) + /* work request immediate data length (hi) */ #define S_FW_WR_IMMDLEN 0 diff --git a/drivers/net/cxgbe/cxgbe_filter.c b/drivers/net/cxgbe/cxgbe_filter.c index bac7aa2916..7759b8acf7 100644 --- a/drivers/net/cxgbe/cxgbe_filter.c +++ b/drivers/net/cxgbe/cxgbe_filter.c @@ -4,6 +4,7 @@ */ #include #include "common.h" +#include "t4_tcb.h" #include "t4_regs.h" #include "cxgbe_filter.h" #include "clip_tbl.h" @@ -116,6 +117,34 @@ int writable_filter(struct filter_entry *f) return 0; } +/** + * Build a CPL_SET_TCB_FIELD message as payload of a ULP_TX_PKT command. + */ +static inline void mk_set_tcb_field_ulp(struct filter_entry *f, + struct cpl_set_tcb_field *req, + unsigned int word, + u64 mask, u64 val, u8 cookie, + int no_reply) +{ + struct ulp_txpkt *txpkt = (struct ulp_txpkt *)req; + struct ulptx_idata *sc = (struct ulptx_idata *)(txpkt + 1); + + txpkt->cmd_dest = cpu_to_be32(V_ULPTX_CMD(ULP_TX_PKT) | + V_ULP_TXPKT_DEST(0)); + txpkt->len = cpu_to_be32(DIV_ROUND_UP(sizeof(*req), 16)); + sc->cmd_more = cpu_to_be32(V_ULPTX_CMD(ULP_TX_SC_IMM)); + sc->len = cpu_to_be32(sizeof(*req) - sizeof(struct work_request_hdr)); + OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_SET_TCB_FIELD, f->tid)); + req->reply_ctrl = cpu_to_be16(V_NO_REPLY(no_reply) | V_REPLY_CHAN(0) | + V_QUEUENO(0)); + req->word_cookie = cpu_to_be16(V_WORD(word) | V_COOKIE(cookie)); + req->mask = cpu_to_be64(mask); + req->val = cpu_to_be64(val); + sc = (struct ulptx_idata *)(req + 1); + sc->cmd_more = cpu_to_be32(V_ULPTX_CMD(ULP_TX_SC_NOOP)); + sc->len = cpu_to_be32(0); +} + /** * Check if entry already filled. */ @@ -185,6 +214,132 @@ static u64 hash_filter_ntuple(const struct filter_entry *f) return ntuple; } +/** + * Build a CPL_ABORT_REQ message as payload of a ULP_TX_PKT command. + */ +static void mk_abort_req_ulp(struct cpl_abort_req *abort_req, + unsigned int tid) +{ + struct ulp_txpkt *txpkt = (struct ulp_txpkt *)abort_req; + struct ulptx_idata *sc = (struct ulptx_idata *)(txpkt + 1); + + txpkt->cmd_dest = cpu_to_be32(V_ULPTX_CMD(ULP_TX_PKT) | + V_ULP_TXPKT_DEST(0)); + txpkt->len = cpu_to_be32(DIV_ROUND_UP(sizeof(*abort_req), 16)); + sc->cmd_more = cpu_to_be32(V_ULPTX_CMD(ULP_TX_SC_IMM)); + sc->len = cpu_to_be32(sizeof(*abort_req) - + sizeof(struct work_request_hdr)); + OPCODE_TID(abort_req) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_REQ, tid)); + abort_req->rsvd0 = cpu_to_be32(0); + abort_req->rsvd1 = 0; + abort_req->cmd = CPL_ABORT_NO_RST; + sc = (struct ulptx_idata *)(abort_req + 1); + sc->cmd_more = cpu_to_be32(V_ULPTX_CMD(ULP_TX_SC_NOOP)); + sc->len = cpu_to_be32(0); +} + +/** + * Build a CPL_ABORT_RPL message as payload of a ULP_TX_PKT command. + */ +static void mk_abort_rpl_ulp(struct cpl_abort_rpl *abort_rpl, + unsigned int tid) +{ + struct ulp_txpkt *txpkt = (struct ulp_txpkt *)abort_rpl; + struct ulptx_idata *sc = (struct ulptx_idata *)(txpkt + 1); + + txpkt->cmd_dest = cpu_to_be32(V_ULPTX_CMD(ULP_TX_PKT) | + V_ULP_TXPKT_DEST(0)); + txpkt->len = cpu_to_be32(DIV_ROUND_UP(sizeof(*abort_rpl), 16)); + sc->cmd_more = cpu_to_be32(V_ULPTX_CMD(ULP_TX_SC_IMM)); + sc->len = cpu_to_be32(sizeof(*abort_rpl) - + sizeof(struct work_request_hdr)); + OPCODE_TID(abort_rpl) = cpu_to_be32(MK_OPCODE_TID(CPL_ABORT_RPL, tid)); + abort_rpl->rsvd0 = cpu_to_be32(0); + abort_rpl->rsvd1 = 0; + abort_rpl->cmd = CPL_ABORT_NO_RST; + sc = (struct ulptx_idata *)(abort_rpl + 1); + sc->cmd_more = cpu_to_be32(V_ULPTX_CMD(ULP_TX_SC_NOOP)); + sc->len = cpu_to_be32(0); +} + +/** + * Delete the specified hash filter. + */ +static int cxgbe_del_hash_filter(struct rte_eth_dev *dev, + unsigned int filter_id, + struct filter_ctx *ctx) +{ + struct adapter *adapter = ethdev2adap(dev); + struct tid_info *t = &adapter->tids; + struct filter_entry *f; + struct sge_ctrl_txq *ctrlq; + unsigned int port_id = ethdev2pinfo(dev)->port_id; + int ret; + + if (filter_id > adapter->tids.ntids) + return -E2BIG; + + f = lookup_tid(t, filter_id); + if (!f) { + dev_err(adapter, "%s: no filter entry for filter_id = %d\n", + __func__, filter_id); + return -EINVAL; + } + + ret = writable_filter(f); + if (ret) + return ret; + + if (f->valid) { + unsigned int wrlen; + struct rte_mbuf *mbuf; + struct work_request_hdr *wr; + struct ulptx_idata *aligner; + struct cpl_set_tcb_field *req; + struct cpl_abort_req *abort_req; + struct cpl_abort_rpl *abort_rpl; + + f->ctx = ctx; + f->pending = 1; + + wrlen = cxgbe_roundup(sizeof(*wr) + + (sizeof(*req) + sizeof(*aligner)) + + sizeof(*abort_req) + sizeof(*abort_rpl), + 16); + + ctrlq = &adapter->sge.ctrlq[port_id]; + mbuf = rte_pktmbuf_alloc(ctrlq->mb_pool); + if (!mbuf) { + dev_err(adapter, "%s: could not allocate skb ..\n", + __func__); + goto out_err; + } + + mbuf->data_len = wrlen; + mbuf->pkt_len = mbuf->data_len; + + req = rte_pktmbuf_mtod(mbuf, struct cpl_set_tcb_field *); + INIT_ULPTX_WR(req, wrlen, 0, 0); + wr = (struct work_request_hdr *)req; + wr++; + req = (struct cpl_set_tcb_field *)wr; + mk_set_tcb_field_ulp(f, req, W_TCB_RSS_INFO, + V_TCB_RSS_INFO(M_TCB_RSS_INFO), + V_TCB_RSS_INFO(adapter->sge.fw_evtq.abs_id), + 0, 1); + aligner = (struct ulptx_idata *)(req + 1); + abort_req = (struct cpl_abort_req *)(aligner + 1); + mk_abort_req_ulp(abort_req, f->tid); + abort_rpl = (struct cpl_abort_rpl *)(abort_req + 1); + mk_abort_rpl_ulp(abort_rpl, f->tid); + t4_mgmt_tx(ctrlq, mbuf); + } + return 0; + +out_err: + return -ENOMEM; +} + /** * Build a ACT_OPEN_REQ6 message for setting IPv6 hash filter. */ @@ -560,6 +715,9 @@ int cxgbe_del_filter(struct rte_eth_dev *dev, unsigned int filter_id, unsigned int chip_ver; int ret; + if (is_hashfilter(adapter) && fs->cap) + return cxgbe_del_hash_filter(dev, filter_id, ctx); + if (filter_id >= adapter->tids.nftids) return -ERANGE; @@ -967,3 +1125,38 @@ int cxgbe_get_filter_count(struct adapter *adapter, unsigned int fidx, } return 0; } + +/** + * Handle a Hash filter delete reply. + */ +void hash_del_filter_rpl(struct adapter *adap, + const struct cpl_abort_rpl_rss *rpl) +{ + struct tid_info *t = &adap->tids; + struct filter_entry *f; + struct filter_ctx *ctx = NULL; + unsigned int tid = GET_TID(rpl); + + f = lookup_tid(t, tid); + if (!f) { + dev_warn(adap, "%s: could not find filter entry: %u\n", + __func__, tid); + return; + } + + ctx = f->ctx; + f->ctx = NULL; + + f->valid = 0; + + if (f->clipt) + cxgbe_clip_release(f->dev, f->clipt); + + cxgbe_remove_tid(t, 0, tid, 0); + t4_os_free(f); + + if (ctx) { + ctx->result = 0; + t4_complete(&ctx->completion); + } +} diff --git a/drivers/net/cxgbe/cxgbe_filter.h b/drivers/net/cxgbe/cxgbe_filter.h index 7c469c8950..c51efea7d0 100644 --- a/drivers/net/cxgbe/cxgbe_filter.h +++ b/drivers/net/cxgbe/cxgbe_filter.h @@ -224,6 +224,8 @@ int cxgbe_del_filter(struct rte_eth_dev *dev, unsigned int filter_id, int cxgbe_alloc_ftid(struct adapter *adap, unsigned int family); int init_hash_filter(struct adapter *adap); void hash_filter_rpl(struct adapter *adap, const struct cpl_act_open_rpl *rpl); +void hash_del_filter_rpl(struct adapter *adap, + const struct cpl_abort_rpl_rss *rpl); int validate_filter(struct adapter *adap, struct ch_filter_specification *fs); int cxgbe_get_filter_count(struct adapter *adapter, unsigned int fidx, u64 *c, bool get_byte); diff --git a/drivers/net/cxgbe/cxgbe_main.c b/drivers/net/cxgbe/cxgbe_main.c index c550dd5be5..08b2a42d11 100644 --- a/drivers/net/cxgbe/cxgbe_main.c +++ b/drivers/net/cxgbe/cxgbe_main.c @@ -87,6 +87,10 @@ static int fwevtq_handler(struct sge_rspq *q, const __be64 *rsp, const struct cpl_fw6_msg *msg = (const void *)rsp; t4_handle_fw_rpl(q->adapter, msg->data); + } else if (opcode == CPL_ABORT_RPL_RSS) { + const struct cpl_abort_rpl_rss *p = (const void *)rsp; + + hash_del_filter_rpl(q->adapter, p); } else if (opcode == CPL_SET_TCB_RPL) { const struct cpl_set_tcb_rpl *p = (const void *)rsp; @@ -301,6 +305,50 @@ void cxgbe_free_atid(struct tid_info *t, unsigned int atid) t4_os_unlock(&t->atid_lock); } +/** + * Populate a TID_RELEASE WR. Caller must properly size the skb. + */ +static void mk_tid_release(struct rte_mbuf *mbuf, unsigned int tid) +{ + struct cpl_tid_release *req; + + req = rte_pktmbuf_mtod(mbuf, struct cpl_tid_release *); + INIT_TP_WR_MIT_CPL(req, CPL_TID_RELEASE, tid); +} + +/** + * Release a TID and inform HW. If we are unable to allocate the release + * message we defer to a work queue. + */ +void cxgbe_remove_tid(struct tid_info *t, unsigned int chan, unsigned int tid, + unsigned short family) +{ + struct rte_mbuf *mbuf; + struct adapter *adap = container_of(t, struct adapter, tids); + + WARN_ON(tid >= t->ntids); + + if (t->tid_tab[tid]) { + t->tid_tab[tid] = NULL; + rte_atomic32_dec(&t->conns_in_use); + if (t->hash_base && tid >= t->hash_base) { + if (family == FILTER_TYPE_IPV4) + rte_atomic32_dec(&t->hash_tids_in_use); + } else { + if (family == FILTER_TYPE_IPV4) + rte_atomic32_dec(&t->tids_in_use); + } + } + + mbuf = rte_pktmbuf_alloc((&adap->sge.ctrlq[chan])->mb_pool); + if (mbuf) { + mbuf->data_len = sizeof(struct cpl_tid_release); + mbuf->pkt_len = mbuf->data_len; + mk_tid_release(mbuf, tid); + t4_mgmt_tx(&adap->sge.ctrlq[chan], mbuf); + } +} + /** * Insert a TID. */ diff --git a/drivers/net/cxgbe/cxgbe_ofld.h b/drivers/net/cxgbe/cxgbe_ofld.h index 798e398282..50931ed048 100644 --- a/drivers/net/cxgbe/cxgbe_ofld.h +++ b/drivers/net/cxgbe/cxgbe_ofld.h @@ -19,6 +19,19 @@ (w)->wr.wr_lo = cpu_to_be64(0); \ } while (0) +#define INIT_TP_WR_MIT_CPL(w, cpl, tid) do { \ + INIT_TP_WR(w, tid); \ + OPCODE_TID(w) = cpu_to_be32(MK_OPCODE_TID(cpl, tid)); \ +} while (0) + +#define INIT_ULPTX_WR(w, wrlen, atomic, tid) do { \ + (w)->wr.wr_hi = cpu_to_be32(V_FW_WR_OP(FW_ULPTX_WR) | \ + V_FW_WR_ATOMIC(atomic)); \ + (w)->wr.wr_mid = cpu_to_be32(V_FW_WR_LEN16(DIV_ROUND_UP(wrlen, 16)) | \ + V_FW_WR_FLOWID(tid)); \ + (w)->wr.wr_lo = cpu_to_be64(0); \ +} while (0) + /* * Max # of ATIDs. The absolute HW max is 16K but we keep it lower. */ @@ -68,6 +81,8 @@ static inline void *lookup_atid(const struct tid_info *t, unsigned int atid) int cxgbe_alloc_atid(struct tid_info *t, void *data); void cxgbe_free_atid(struct tid_info *t, unsigned int atid); +void cxgbe_remove_tid(struct tid_info *t, unsigned int qid, unsigned int tid, + unsigned short family); void cxgbe_insert_tid(struct tid_info *t, void *data, unsigned int tid, unsigned short family);