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[82.239.227.177]) by smtp.gmail.com with ESMTPSA id cl10sm41407597wjb.4.2016.11.16.08.24.44 (version=TLS1_2 cipher=AES128-SHA bits=128/128); Wed, 16 Nov 2016 08:24:45 -0800 (PST) From: Adrien Mazarguil To: dev@dpdk.org Cc: Thomas Monjalon , Pablo de Lara , Olivier Matz Date: Wed, 16 Nov 2016 17:23:43 +0100 Message-Id: X-Mailer: git-send-email 2.1.4 In-Reply-To: References: Subject: [dpdk-dev] [PATCH 17/22] app/testpmd: add item raw to flow command X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 16 Nov 2016 16:24:46 -0000 Matches arbitrary byte strings with properties: - relative: look for pattern after the previous item. - search: search pattern from offset (see also limit). - offset: absolute or relative offset for pattern. - limit: search area limit for start of pattern. - length: pattern length. - pattern: byte string to look for. Signed-off-by: Adrien Mazarguil --- app/test-pmd/cmdline_flow.c | 206 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 206 insertions(+) diff --git a/app/test-pmd/cmdline_flow.c b/app/test-pmd/cmdline_flow.c index c61e31e..6f2f26c 100644 --- a/app/test-pmd/cmdline_flow.c +++ b/app/test-pmd/cmdline_flow.c @@ -57,6 +57,8 @@ enum index { INTEGER, UNSIGNED, PREFIX, + BOOLEAN, + STRING, RULE_ID, PORT_ID, GROUP_ID, @@ -107,6 +109,12 @@ enum index { ITEM_VF_ID, ITEM_PORT, ITEM_PORT_INDEX, + ITEM_RAW, + ITEM_RAW_RELATIVE, + ITEM_RAW_SEARCH, + ITEM_RAW_OFFSET, + ITEM_RAW_LIMIT, + ITEM_RAW_PATTERN, /* Validate/create actions. */ ACTIONS, @@ -116,6 +124,13 @@ enum index { ACTION_PASSTHRU, }; +/** Size of pattern[] field in struct rte_flow_item_raw. */ +#define ITEM_RAW_PATTERN_SIZE 36 + +/** Storage size for struct rte_flow_item_raw including pattern. */ +#define ITEM_RAW_SIZE \ + (offsetof(struct rte_flow_item_raw, pattern) + ITEM_RAW_PATTERN_SIZE) + /** Maximum number of subsequent tokens and arguments on the stack. */ #define CTX_STACK_SIZE 16 @@ -217,6 +232,13 @@ struct token { .size = sizeof(*((s *)0)->f), \ }) +/** Static initializer for ARGS() with arbitrary size. */ +#define ARGS_ENTRY_USZ(s, f, sz) \ + (&(const struct arg){ \ + .offset = offsetof(s, f), \ + .size = (sz), \ + }) + /** Parser output buffer layout expected by cmd_flow_parsed(). */ struct buffer { enum index command; /**< Flow command. */ @@ -307,6 +329,7 @@ static const enum index next_item[] = { ITEM_PF, ITEM_VF, ITEM_PORT, + ITEM_RAW, 0, }; @@ -329,6 +352,16 @@ static const enum index item_port[] = { 0, }; +static const enum index item_raw[] = { + ITEM_RAW_RELATIVE, + ITEM_RAW_SEARCH, + ITEM_RAW_OFFSET, + ITEM_RAW_LIMIT, + ITEM_RAW_PATTERN, + ITEM_NEXT, + 0, +}; + static const enum index next_action[] = { ACTION_END, ACTION_VOID, @@ -365,11 +398,19 @@ static int parse_int(struct context *, const struct token *, static int parse_prefix(struct context *, const struct token *, const char *, unsigned int, void *, unsigned int); +static int parse_boolean(struct context *, const struct token *, + const char *, unsigned int, + void *, unsigned int); +static int parse_string(struct context *, const struct token *, + const char *, unsigned int, + void *, unsigned int); static int parse_port(struct context *, const struct token *, const char *, unsigned int, void *, unsigned int); static int comp_none(struct context *, const struct token *, unsigned int, char *, unsigned int); +static int comp_boolean(struct context *, const struct token *, + unsigned int, char *, unsigned int); static int comp_action(struct context *, const struct token *, unsigned int, char *, unsigned int); static int comp_port(struct context *, const struct token *, @@ -412,6 +453,20 @@ static const struct token token_list[] = { .call = parse_prefix, .comp = comp_none, }, + [BOOLEAN] = { + .name = "{boolean}", + .type = "BOOLEAN", + .help = "any boolean value", + .call = parse_boolean, + .comp = comp_boolean, + }, + [STRING] = { + .name = "{string}", + .type = "STRING", + .help = "fixed string", + .call = parse_string, + .comp = comp_none, + }, [RULE_ID] = { .name = "{rule id}", .type = "RULE ID", @@ -662,6 +717,50 @@ static const struct token token_list[] = { .next = NEXT(item_port, NEXT_ENTRY(UNSIGNED), item_param), .args = ARGS(ARGS_ENTRY(struct rte_flow_item_port, index)), }, + [ITEM_RAW] = { + .name = "raw", + .help = "match an arbitrary byte string", + .priv = PRIV_ITEM(RAW, ITEM_RAW_SIZE), + .next = NEXT(item_raw), + .call = parse_vc, + }, + [ITEM_RAW_RELATIVE] = { + .name = "relative", + .help = "look for pattern after the previous item", + .next = NEXT(item_raw, NEXT_ENTRY(BOOLEAN), item_param), + .args = ARGS(ARGS_ENTRY_BF(struct rte_flow_item_raw, relative)), + }, + [ITEM_RAW_SEARCH] = { + .name = "search", + .help = "search pattern from offset (see also limit)", + .next = NEXT(item_raw, NEXT_ENTRY(BOOLEAN), item_param), + .args = ARGS(ARGS_ENTRY_BF(struct rte_flow_item_raw, search)), + }, + [ITEM_RAW_OFFSET] = { + .name = "offset", + .help = "absolute or relative offset for pattern", + .next = NEXT(item_raw, NEXT_ENTRY(INTEGER), item_param), + .args = ARGS(ARGS_ENTRY(struct rte_flow_item_raw, offset)), + }, + [ITEM_RAW_LIMIT] = { + .name = "limit", + .help = "search area limit for start of pattern", + .next = NEXT(item_raw, NEXT_ENTRY(UNSIGNED), item_param), + .args = ARGS(ARGS_ENTRY(struct rte_flow_item_raw, limit)), + }, + [ITEM_RAW_PATTERN] = { + .name = "pattern", + .help = "byte string to look for", + .next = NEXT(item_raw, + NEXT_ENTRY(STRING), + NEXT_ENTRY(ITEM_PARAM_FIX, + ITEM_PARAM_SPEC, + ITEM_PARAM_MASK)), + .args = ARGS(ARGS_ENTRY(struct rte_flow_item_raw, length), + ARGS_ENTRY_USZ(struct rte_flow_item_raw, + pattern, + ITEM_RAW_PATTERN_SIZE)), + }, /* Validate/create actions. */ [ACTIONS] = { .name = "actions", @@ -1243,6 +1342,96 @@ parse_int(struct context *ctx, const struct token *token, return -1; } +/** + * Parse a string. + * + * Two arguments (ctx->args) are retrieved from the stack to store data and + * its length (in that order). + */ +static int +parse_string(struct context *ctx, const struct token *token, + const char *str, unsigned int len, + void *buf, unsigned int size) +{ + const struct arg *arg_data = pop_args(ctx); + const struct arg *arg_len = pop_args(ctx); + char tmp[16]; /* Ought to be enough. */ + int ret; + + /* Arguments are expected. */ + if (!arg_data) + return -1; + if (!arg_len) { + push_args(ctx, arg_data); + return -1; + } + size = arg_data->size; + /* Bit-mask fill is not supported. */ + if (arg_data->mask || size < len) + goto error; + if (!ctx->object) + return len; + /* Let parse_int() fill length information first. */ + ret = snprintf(tmp, sizeof(tmp), "%u", len); + if (ret < 0) + goto error; + push_args(ctx, arg_len); + ret = parse_int(ctx, token, tmp, ret, NULL, 0); + if (ret < 0) { + pop_args(ctx); + goto error; + } + buf = (uint8_t *)ctx->object + arg_data->offset; + /* Output buffer is not necessarily NUL-terminated. */ + memcpy(buf, str, len); + memset((uint8_t *)buf + len, 0x55, size - len); + if (ctx->objmask) + memset((uint8_t *)ctx->objmask + arg_data->offset, 0xff, len); + return len; +error: + push_args(ctx, arg_len); + push_args(ctx, arg_data); + return -1; +} + +/** Boolean values (even indices stand for false). */ +static const char *const boolean_name[] = { + "0", "1", + "false", "true", + "no", "yes", + "N", "Y", + NULL, +}; + +/** + * Parse a boolean value. + * + * Last argument (ctx->args) is retrieved to determine storage size and + * location. + */ +static int +parse_boolean(struct context *ctx, const struct token *token, + const char *str, unsigned int len, + void *buf, unsigned int size) +{ + const struct arg *arg = pop_args(ctx); + unsigned int i; + int ret; + + /* Argument is expected. */ + if (!arg) + return -1; + for (i = 0; boolean_name[i]; ++i) + if (!strncmp(str, boolean_name[i], len)) + break; + /* Process token as integer. */ + if (boolean_name[i]) + str = i & 1 ? "1" : "0"; + push_args(ctx, arg); + ret = parse_int(ctx, token, str, strlen(str), buf, size); + return ret > 0 ? (int)len : ret; +} + /** Parse port and update context. */ static int parse_port(struct context *ctx, const struct token *token, @@ -1281,6 +1470,23 @@ comp_none(struct context *ctx, const struct token *token, return 0; } +/** Complete boolean values. */ +static int +comp_boolean(struct context *ctx, const struct token *token, + unsigned int ent, char *buf, unsigned int size) +{ + unsigned int i; + + (void)ctx; + (void)token; + for (i = 0; boolean_name[i]; ++i) + if (buf && i == ent) + return snprintf(buf, size, "%s", boolean_name[i]); + if (buf) + return -1; + return i; +} + /** Complete action names. */ static int comp_action(struct context *ctx, const struct token *token, -- 2.1.4