Since forward declarations are frowned on upstream we move the NID range handling to near the start of the nidstring.c file. Signed-off-by: James Simmons <uja.ornl@xxxxxxxxx> Reviewed-on: http://review.whamcloud.com/15086 Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6245 Reviewed-by: Dmitry Eremin <dmitry.eremin@xxxxxxxxx> Reviewed-by: Bob Glossman <bob.glossman@xxxxxxxxx> Reviewed-by: John L. Hammond <john.hammond@xxxxxxxxx> Reviewed-by: Oleg Drokin <oleg.drokin@xxxxxxxxx> --- drivers/staging/lustre/lnet/lnet/nidstrings.c | 782 +++++++++++++------------ 1 files changed, 395 insertions(+), 387 deletions(-) diff --git a/drivers/staging/lustre/lnet/lnet/nidstrings.c b/drivers/staging/lustre/lnet/lnet/nidstrings.c index a02c1f6..1874dfe 100644 --- a/drivers/staging/lustre/lnet/lnet/nidstrings.c +++ b/drivers/staging/lustre/lnet/lnet/nidstrings.c @@ -63,6 +63,8 @@ static int libcfs_nidstring_idx; static DEFINE_SPINLOCK(libcfs_nidstring_lock); +static struct netstrfns *libcfs_namenum2netstrfns(const char *name); + char * libcfs_next_nidstring(void) { @@ -80,20 +82,403 @@ libcfs_next_nidstring(void) } EXPORT_SYMBOL(libcfs_next_nidstring); -static int libcfs_lo_str2addr(const char *str, int nob, __u32 *addr) +/** + * Nid range list syntax. + * \verbatim + * + * <nidlist> :== <nidrange> [ ' ' <nidrange> ] + * <nidrange> :== <addrrange> '@' <net> + * <addrrange> :== '*' | + * <ipaddr_range> | + * <cfs_expr_list> + * <ipaddr_range> :== <cfs_expr_list>.<cfs_expr_list>.<cfs_expr_list>. + * <cfs_expr_list> + * <cfs_expr_list> :== <number> | + * <expr_list> + * <expr_list> :== '[' <range_expr> [ ',' <range_expr>] ']' + * <range_expr> :== <number> | + * <number> '-' <number> | + * <number> '-' <number> '/' <number> + * <net> :== <netname> | <netname><number> + * <netname> :== "lo" | "tcp" | "o2ib" | "cib" | "openib" | "iib" | + * "vib" | "ra" | "elan" | "mx" | "ptl" + * \endverbatim + */ + +/** + * Structure to represent \<nidrange\> token of the syntax. + * + * One of this is created for each \<net\> parsed. + */ +struct nidrange { + /** + * Link to list of this structures which is built on nid range + * list parsing. + */ + struct list_head nr_link; + /** + * List head for addrrange::ar_link. + */ + struct list_head nr_addrranges; + /** + * Flag indicating that *@<net> is found. + */ + int nr_all; + /** + * Pointer to corresponding element of libcfs_netstrfns. + */ + struct netstrfns *nr_netstrfns; + /** + * Number of network. E.g. 5 if \<net\> is "elan5". + */ + int nr_netnum; +}; + +/** + * Structure to represent \<addrrange\> token of the syntax. + */ +struct addrrange { + /** + * Link to nidrange::nr_addrranges. + */ + struct list_head ar_link; + /** + * List head for cfs_expr_list::el_list. + */ + struct list_head ar_numaddr_ranges; +}; + +/** + * Parses \<addrrange\> token on the syntax. + * + * Allocates struct addrrange and links to \a nidrange via + * (nidrange::nr_addrranges) + * + * \retval 0 if \a src parses to '*' | \<ipaddr_range\> | \<cfs_expr_list\> + * \retval -errno otherwise + */ +static int +parse_addrange(const struct cfs_lstr *src, struct nidrange *nidrange) +{ + struct addrrange *addrrange; + + if (src->ls_len == 1 && src->ls_str[0] == '*') { + nidrange->nr_all = 1; + return 0; + } + + LIBCFS_ALLOC(addrrange, sizeof(struct addrrange)); + if (addrrange == NULL) + return -ENOMEM; + list_add_tail(&addrrange->ar_link, &nidrange->nr_addrranges); + INIT_LIST_HEAD(&addrrange->ar_numaddr_ranges); + + return nidrange->nr_netstrfns->nf_parse_addrlist(src->ls_str, + src->ls_len, + &addrrange->ar_numaddr_ranges); +} + +/** + * Finds or creates struct nidrange. + * + * Checks if \a src is a valid network name, looks for corresponding + * nidrange on the ist of nidranges (\a nidlist), creates new struct + * nidrange if it is not found. + * + * \retval pointer to struct nidrange matching network specified via \a src + * \retval NULL if \a src does not match any network + */ +static struct nidrange * +add_nidrange(const struct cfs_lstr *src, + struct list_head *nidlist) +{ + struct netstrfns *nf; + struct nidrange *nr; + int endlen; + unsigned netnum; + + if (src->ls_len >= LNET_NIDSTR_SIZE) + return NULL; + + nf = libcfs_namenum2netstrfns(src->ls_str); + if (nf == NULL) + return NULL; + endlen = src->ls_len - strlen(nf->nf_name); + if (endlen == 0) + /* network name only, e.g. "elan" or "tcp" */ + netnum = 0; + else { + /* e.g. "elan25" or "tcp23", refuse to parse if + * network name is not appended with decimal or + * hexadecimal number */ + if (!cfs_str2num_check(src->ls_str + strlen(nf->nf_name), + endlen, &netnum, 0, MAX_NUMERIC_VALUE)) + return NULL; + } + + list_for_each_entry(nr, nidlist, nr_link) { + if (nr->nr_netstrfns != nf) + continue; + if (nr->nr_netnum != netnum) + continue; + return nr; + } + + LIBCFS_ALLOC(nr, sizeof(struct nidrange)); + if (nr == NULL) + return NULL; + list_add_tail(&nr->nr_link, nidlist); + INIT_LIST_HEAD(&nr->nr_addrranges); + nr->nr_netstrfns = nf; + nr->nr_all = 0; + nr->nr_netnum = netnum; + + return nr; +} + +/** + * Parses \<nidrange\> token of the syntax. + * + * \retval 1 if \a src parses to \<addrrange\> '@' \<net\> + * \retval 0 otherwise + */ +static int +parse_nidrange(struct cfs_lstr *src, struct list_head *nidlist) +{ + struct cfs_lstr addrrange; + struct cfs_lstr net; + struct cfs_lstr tmp; + struct nidrange *nr; + + tmp = *src; + if (cfs_gettok(src, '@', &addrrange) == 0) + goto failed; + + if (cfs_gettok(src, '@', &net) == 0 || src->ls_str != NULL) + goto failed; + + nr = add_nidrange(&net, nidlist); + if (nr == NULL) + goto failed; + + if (parse_addrange(&addrrange, nr) != 0) + goto failed; + + return 1; +failed: + CWARN("can't parse nidrange: \"%.*s\"\n", tmp.ls_len, tmp.ls_str); + return 0; +} + +/** + * Frees addrrange structures of \a list. + * + * For each struct addrrange structure found on \a list it frees + * cfs_expr_list list attached to it and frees the addrrange itself. + * + * \retval none + */ +static void +free_addrranges(struct list_head *list) +{ + while (!list_empty(list)) { + struct addrrange *ar; + + ar = list_entry(list->next, struct addrrange, ar_link); + + cfs_expr_list_free_list(&ar->ar_numaddr_ranges); + list_del(&ar->ar_link); + LIBCFS_FREE(ar, sizeof(struct addrrange)); + } +} + +/** + * Frees nidrange strutures of \a list. + * + * For each struct nidrange structure found on \a list it frees + * addrrange list attached to it and frees the nidrange itself. + * + * \retval none + */ +void +cfs_free_nidlist(struct list_head *list) +{ + struct list_head *pos, *next; + struct nidrange *nr; + + list_for_each_safe(pos, next, list) { + nr = list_entry(pos, struct nidrange, nr_link); + free_addrranges(&nr->nr_addrranges); + list_del(pos); + LIBCFS_FREE(nr, sizeof(struct nidrange)); + } +} +EXPORT_SYMBOL(cfs_free_nidlist); + +/** + * Parses nid range list. + * + * Parses with rigorous syntax and overflow checking \a str into + * \<nidrange\> [ ' ' \<nidrange\> ], compiles \a str into set of + * structures and links that structure to \a nidlist. The resulting + * list can be used to match a NID againts set of NIDS defined by \a + * str. + * \see cfs_match_nid + * + * \retval 1 on success + * \retval 0 otherwise + */ +int +cfs_parse_nidlist(char *str, int len, struct list_head *nidlist) +{ + struct cfs_lstr src; + struct cfs_lstr res; + int rc; + + src.ls_str = str; + src.ls_len = len; + INIT_LIST_HEAD(nidlist); + while (src.ls_str) { + rc = cfs_gettok(&src, ' ', &res); + if (rc == 0) { + cfs_free_nidlist(nidlist); + return 0; + } + rc = parse_nidrange(&res, nidlist); + if (rc == 0) { + cfs_free_nidlist(nidlist); + return 0; + } + } + return 1; +} +EXPORT_SYMBOL(cfs_parse_nidlist); + +/** + * Matches a nid (\a nid) against the compiled list of nidranges (\a nidlist). + * + * \see cfs_parse_nidlist() + * + * \retval 1 on match + * \retval 0 otherwises + */ +int cfs_match_nid(lnet_nid_t nid, struct list_head *nidlist) +{ + struct nidrange *nr; + struct addrrange *ar; + + list_for_each_entry(nr, nidlist, nr_link) { + if (nr->nr_netstrfns->nf_type != LNET_NETTYP(LNET_NIDNET(nid))) + continue; + if (nr->nr_netnum != LNET_NETNUM(LNET_NIDNET(nid))) + continue; + if (nr->nr_all) + return 1; + list_for_each_entry(ar, &nr->nr_addrranges, ar_link) + if (nr->nr_netstrfns->nf_match_addr(LNET_NIDADDR(nid), + &ar->ar_numaddr_ranges)) + return 1; + } + return 0; +} +EXPORT_SYMBOL(cfs_match_nid); + +/** + * Print the network part of the nidrange \a nr into the specified \a buffer. + * + * \retval number of characters written + */ +static int +cfs_print_network(char *buffer, int count, struct nidrange *nr) +{ + struct netstrfns *nf = nr->nr_netstrfns; + + if (nr->nr_netnum == 0) + return scnprintf(buffer, count, "@%s", nf->nf_name); + else + return scnprintf(buffer, count, "@%s%u", + nf->nf_name, nr->nr_netnum); +} + +/** + * Print a list of addrrange (\a addrranges) into the specified \a buffer. + * At max \a count characters can be printed into \a buffer. + * + * \retval number of characters written + */ +static int +cfs_print_addrranges(char *buffer, int count, struct list_head *addrranges, + struct nidrange *nr) +{ + int i = 0; + struct addrrange *ar; + struct netstrfns *nf = nr->nr_netstrfns; + + list_for_each_entry(ar, addrranges, ar_link) { + if (i != 0) + i += scnprintf(buffer + i, count - i, " "); + i += nf->nf_print_addrlist(buffer + i, count - i, + &ar->ar_numaddr_ranges); + i += cfs_print_network(buffer + i, count - i, nr); + } + return i; +} + +/** + * Print a list of nidranges (\a nidlist) into the specified \a buffer. + * At max \a count characters can be printed into \a buffer. + * Nidranges are separated by a space character. + * + * \retval number of characters written + */ +int cfs_print_nidlist(char *buffer, int count, struct list_head *nidlist) +{ + int i = 0; + struct nidrange *nr; + + if (count <= 0) + return 0; + + list_for_each_entry(nr, nidlist, nr_link) { + if (i != 0) + i += scnprintf(buffer + i, count - i, " "); + + if (nr->nr_all != 0) { + LASSERT(list_empty(&nr->nr_addrranges)); + i += scnprintf(buffer + i, count - i, "*"); + i += cfs_print_network(buffer + i, count - i, nr); + } else { + i += cfs_print_addrranges(buffer + i, count - i, + &nr->nr_addrranges, nr); + } + } + return i; +} +EXPORT_SYMBOL(cfs_print_nidlist); + +static int +libcfs_lo_str2addr(const char *str, int nob, __u32 *addr) { *addr = 0; return 1; } -static void libcfs_ip_addr2str(__u32 addr, char *str) +static void +libcfs_ip_addr2str(__u32 addr, char *str) { snprintf(str, LNET_NIDSTR_SIZE, "%u.%u.%u.%u", (addr >> 24) & 0xff, (addr >> 16) & 0xff, (addr >> 8) & 0xff, addr & 0xff); } -static int libcfs_ip_str2addr(const char *str, int nob, __u32 *addr) +/* CAVEAT EMPTOR XscanfX + * I use "%n" at the end of a sscanf format to detect trailing junk. However + * sscanf may return immediately if it sees the terminating '0' in a string, so + * I initialise the %n variable to the expected length. If sscanf sets it; + * fine, if it doesn't, then the scan ended at the end of the string, which is + * fine too :) */ +static int +libcfs_ip_str2addr(const char *str, int nob, __u32 *addr) { unsigned int a; unsigned int b; @@ -113,6 +498,7 @@ static int libcfs_ip_str2addr(const char *str, int nob, __u32 *addr) return 0; } +/* Used by lnet/config.c so it can't be static */ int cfs_ip_addr_parse(char *str, int len, struct list_head *list) { @@ -188,17 +574,20 @@ cfs_ip_addr_match(__u32 addr, struct list_head *list) return i == 4; } -static void libcfs_decnum_addr2str(__u32 addr, char *str) +static void +libcfs_decnum_addr2str(__u32 addr, char *str) { snprintf(str, LNET_NIDSTR_SIZE, "%u", addr); } -static void libcfs_hexnum_addr2str(__u32 addr, char *str) +static void +libcfs_hexnum_addr2str(__u32 addr, char *str) { snprintf(str, LNET_NIDSTR_SIZE, "0x%x", addr); } -static int libcfs_num_str2addr(const char *str, int nob, __u32 *addr) +static int +libcfs_num_str2addr(const char *str, int nob, __u32 *addr) { int n; @@ -379,13 +768,6 @@ static struct netstrfns libcfs_netstrfns[] = { static const int libcfs_nnetstrfns = ARRAY_SIZE(libcfs_netstrfns); -/* CAVEAT EMPTOR XscanfX - * I use "%n" at the end of a sscanf format to detect trailing junk. However - * sscanf may return immediately if it sees the terminating '0' in a string, so - * I initialise the %n variable to the expected length. If sscanf sets it; - * fine, if it doesn't, then the scan ended at the end of the string, which is - * fine too :) */ - static struct netstrfns * libcfs_lnd2netstrfns(int lnd) { @@ -628,377 +1010,3 @@ libcfs_str2anynid(lnet_nid_t *nidp, const char *str) return *nidp != LNET_NID_ANY; } EXPORT_SYMBOL(libcfs_str2anynid); - -/** - * Nid range list syntax. - * \verbatim - * - * <nidlist> :== <nidrange> [ ' ' <nidrange> ] - * <nidrange> :== <addrrange> '@' <net> - * <addrrange> :== '*' | - * <ipaddr_range> | - * <cfs_expr_list> - * <ipaddr_range> :== <cfs_expr_list>.<cfs_expr_list>.<cfs_expr_list>. - * <cfs_expr_list> - * <cfs_expr_list> :== <number> | - * <expr_list> - * <expr_list> :== '[' <range_expr> [ ',' <range_expr>] ']' - * <range_expr> :== <number> | - * <number> '-' <number> | - * <number> '-' <number> '/' <number> - * <net> :== <netname> | <netname><number> - * <netname> :== "lo" | "tcp" | "o2ib" | "cib" | "openib" | "iib" | - * "vib" | "ra" | "elan" | "mx" | "ptl" - * \endverbatim - */ - -/** - * Structure to represent \<nidrange\> token of the syntax. - * - * One of this is created for each \<net\> parsed. - */ -struct nidrange { - /** - * Link to list of this structures which is built on nid range - * list parsing. - */ - struct list_head nr_link; - /** - * List head for addrrange::ar_link. - */ - struct list_head nr_addrranges; - /** - * Flag indicating that *@<net> is found. - */ - int nr_all; - /** - * Pointer to corresponding element of libcfs_netstrfns. - */ - struct netstrfns *nr_netstrfns; - /** - * Number of network. E.g. 5 if \<net\> is "elan5". - */ - int nr_netnum; -}; - -/** - * Structure to represent \<addrrange\> token of the syntax. - */ -struct addrrange { - /** - * Link to nidrange::nr_addrranges. - */ - struct list_head ar_link; - /** - * List head for cfs_expr_list::el_list. - */ - struct list_head ar_numaddr_ranges; -}; - -/** - * Parses \<addrrange\> token on the syntax. - * - * Allocates struct addrrange and links to \a nidrange via - * (nidrange::nr_addrranges) - * - * \retval 0 if \a src parses to '*' | \<ipaddr_range\> | \<cfs_expr_list\> - * \retval -errno otherwise - */ -static int -parse_addrange(const struct cfs_lstr *src, struct nidrange *nidrange) -{ - struct addrrange *addrrange; - - if (src->ls_len == 1 && src->ls_str[0] == '*') { - nidrange->nr_all = 1; - return 0; - } - - LIBCFS_ALLOC(addrrange, sizeof(struct addrrange)); - if (addrrange == NULL) - return -ENOMEM; - list_add_tail(&addrrange->ar_link, &nidrange->nr_addrranges); - INIT_LIST_HEAD(&addrrange->ar_numaddr_ranges); - - return nidrange->nr_netstrfns->nf_parse_addrlist(src->ls_str, - src->ls_len, - &addrrange->ar_numaddr_ranges); -} - -/** - * Finds or creates struct nidrange. - * - * Checks if \a src is a valid network name, looks for corresponding - * nidrange on the ist of nidranges (\a nidlist), creates new struct - * nidrange if it is not found. - * - * \retval pointer to struct nidrange matching network specified via \a src - * \retval NULL if \a src does not match any network - */ -static struct nidrange * -add_nidrange(const struct cfs_lstr *src, - struct list_head *nidlist) -{ - struct netstrfns *nf; - struct nidrange *nr; - int endlen; - unsigned netnum; - - if (src->ls_len >= LNET_NIDSTR_SIZE) - return NULL; - - nf = libcfs_namenum2netstrfns(src->ls_str); - if (nf == NULL) - return NULL; - endlen = src->ls_len - strlen(nf->nf_name); - if (endlen == 0) - /* network name only, e.g. "elan" or "tcp" */ - netnum = 0; - else { - /* e.g. "elan25" or "tcp23", refuse to parse if - * network name is not appended with decimal or - * hexadecimal number */ - if (!cfs_str2num_check(src->ls_str + strlen(nf->nf_name), - endlen, &netnum, 0, MAX_NUMERIC_VALUE)) - return NULL; - } - - list_for_each_entry(nr, nidlist, nr_link) { - if (nr->nr_netstrfns != nf) - continue; - if (nr->nr_netnum != netnum) - continue; - return nr; - } - - LIBCFS_ALLOC(nr, sizeof(struct nidrange)); - if (nr == NULL) - return NULL; - list_add_tail(&nr->nr_link, nidlist); - INIT_LIST_HEAD(&nr->nr_addrranges); - nr->nr_netstrfns = nf; - nr->nr_all = 0; - nr->nr_netnum = netnum; - - return nr; -} - -/** - * Parses \<nidrange\> token of the syntax. - * - * \retval 1 if \a src parses to \<addrrange\> '@' \<net\> - * \retval 0 otherwise - */ -static int -parse_nidrange(struct cfs_lstr *src, struct list_head *nidlist) -{ - struct cfs_lstr addrrange; - struct cfs_lstr net; - struct cfs_lstr tmp; - struct nidrange *nr; - - tmp = *src; - if (cfs_gettok(src, '@', &addrrange) == 0) - goto failed; - - if (cfs_gettok(src, '@', &net) == 0 || src->ls_str != NULL) - goto failed; - - nr = add_nidrange(&net, nidlist); - if (nr == NULL) - goto failed; - - if (parse_addrange(&addrrange, nr) != 0) - goto failed; - - return 1; - failed: - CWARN("can't parse nidrange: \"%.*s\"\n", tmp.ls_len, tmp.ls_str); - return 0; -} - -/** - * Frees addrrange structures of \a list. - * - * For each struct addrrange structure found on \a list it frees - * cfs_expr_list list attached to it and frees the addrrange itself. - * - * \retval none - */ -static void -free_addrranges(struct list_head *list) -{ - while (!list_empty(list)) { - struct addrrange *ar; - - ar = list_entry(list->next, struct addrrange, ar_link); - - cfs_expr_list_free_list(&ar->ar_numaddr_ranges); - list_del(&ar->ar_link); - LIBCFS_FREE(ar, sizeof(struct addrrange)); - } -} - -/** - * Frees nidrange strutures of \a list. - * - * For each struct nidrange structure found on \a list it frees - * addrrange list attached to it and frees the nidrange itself. - * - * \retval none - */ -void -cfs_free_nidlist(struct list_head *list) -{ - struct list_head *pos, *next; - struct nidrange *nr; - - list_for_each_safe(pos, next, list) { - nr = list_entry(pos, struct nidrange, nr_link); - free_addrranges(&nr->nr_addrranges); - list_del(pos); - LIBCFS_FREE(nr, sizeof(struct nidrange)); - } -} -EXPORT_SYMBOL(cfs_free_nidlist); - -/** - * Parses nid range list. - * - * Parses with rigorous syntax and overflow checking \a str into - * \<nidrange\> [ ' ' \<nidrange\> ], compiles \a str into set of - * structures and links that structure to \a nidlist. The resulting - * list can be used to match a NID againts set of NIDS defined by \a - * str. - * \see cfs_match_nid - * - * \retval 1 on success - * \retval 0 otherwise - */ -int -cfs_parse_nidlist(char *str, int len, struct list_head *nidlist) -{ - struct cfs_lstr src; - struct cfs_lstr res; - int rc; - - src.ls_str = str; - src.ls_len = len; - INIT_LIST_HEAD(nidlist); - while (src.ls_str) { - rc = cfs_gettok(&src, ' ', &res); - if (rc == 0) { - cfs_free_nidlist(nidlist); - return 0; - } - rc = parse_nidrange(&res, nidlist); - if (rc == 0) { - cfs_free_nidlist(nidlist); - return 0; - } - } - return 1; -} -EXPORT_SYMBOL(cfs_parse_nidlist); - -/** - * Matches a nid (\a nid) against the compiled list of nidranges (\a nidlist). - * - * \see cfs_parse_nidlist() - * - * \retval 1 on match - * \retval 0 otherwises - */ -int cfs_match_nid(lnet_nid_t nid, struct list_head *nidlist) -{ - struct nidrange *nr; - struct addrrange *ar; - - list_for_each_entry(nr, nidlist, nr_link) { - if (nr->nr_netstrfns->nf_type != LNET_NETTYP(LNET_NIDNET(nid))) - continue; - if (nr->nr_netnum != LNET_NETNUM(LNET_NIDNET(nid))) - continue; - if (nr->nr_all) - return 1; - list_for_each_entry(ar, &nr->nr_addrranges, ar_link) - if (nr->nr_netstrfns->nf_match_addr(LNET_NIDADDR(nid), - &ar->ar_numaddr_ranges)) - return 1; - } - return 0; -} -EXPORT_SYMBOL(cfs_match_nid); - -/** - * Print the network part of the nidrange \a nr into the specified \a buffer. - * - * \retval number of characters written - */ -static int -cfs_print_network(char *buffer, int count, struct nidrange *nr) -{ - struct netstrfns *nf = nr->nr_netstrfns; - - if (nr->nr_netnum == 0) - return scnprintf(buffer, count, "@%s", nf->nf_name); - else - return scnprintf(buffer, count, "@%s%u", - nf->nf_name, nr->nr_netnum); -} - -/** - * Print a list of addrrange (\a addrranges) into the specified \a buffer. - * At max \a count characters can be printed into \a buffer. - * - * \retval number of characters written - */ -static int -cfs_print_addrranges(char *buffer, int count, struct list_head *addrranges, - struct nidrange *nr) -{ - int i = 0; - struct addrrange *ar; - struct netstrfns *nf = nr->nr_netstrfns; - - list_for_each_entry(ar, addrranges, ar_link) { - if (i != 0) - i += scnprintf(buffer + i, count - i, " "); - i += nf->nf_print_addrlist(buffer + i, count - i, - &ar->ar_numaddr_ranges); - i += cfs_print_network(buffer + i, count - i, nr); - } - return i; -} - -/** - * Print a list of nidranges (\a nidlist) into the specified \a buffer. - * At max \a count characters can be printed into \a buffer. - * Nidranges are separated by a space character. - * - * \retval number of characters written - */ -int cfs_print_nidlist(char *buffer, int count, struct list_head *nidlist) -{ - int i = 0; - struct nidrange *nr; - - if (count <= 0) - return 0; - - list_for_each_entry(nr, nidlist, nr_link) { - if (i != 0) - i += scnprintf(buffer + i, count - i, " "); - - if (nr->nr_all != 0) { - LASSERT(list_empty(&nr->nr_addrranges)); - i += scnprintf(buffer + i, count - i, "*"); - i += cfs_print_network(buffer + i, count - i, nr); - } else { - i += cfs_print_addrranges(buffer + i, count - i, - &nr->nr_addrranges, nr); - } - } - return i; -} -EXPORT_SYMBOL(cfs_print_nidlist); -- 1.7.1 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
