int
alg_info_snprint_esp(char *buf, int buflen, struct alg_info_esp *alg_info)
{
char *ptr=buf;
int ret;
struct esp_info *esp_info;
int cnt;
int eklen, aklen;
ptr=buf;
ALG_INFO_ESP_FOREACH(alg_info, esp_info, cnt) {
if (kernel_alg_esp_enc_ok(esp_info->esp_ealg_id, 0, NULL) &&
(kernel_alg_esp_auth_ok(esp_info->esp_aalg_id, NULL))) {
eklen=esp_info->esp_ealg_keylen;
if (!eklen)
eklen=kernel_alg_esp_enc_keylen(esp_info->esp_ealg_id)*BITS_PER_BYTE;
aklen=esp_info->esp_aalg_keylen;
if (!aklen)
aklen=kernel_alg_esp_auth_keylen(esp_info->esp_aalg_id)*BITS_PER_BYTE;
ret=snprintf(ptr, buflen, "%d_%03d-%d_%03d, ",
esp_info->esp_ealg_id,
eklen,
esp_info->esp_aalg_id,
aklen);
ptr+=ret;
buflen-=ret;
if (buflen<0) break;
}
}
return ptr-buf;
}
/*
* print which ESP algorithm has actually been selected, based upon which
* ones are actually loaded.
*/
int
alg_info_snprint_esp(char *buf, int buflen, struct alg_info_esp *alg_info)
{
char *ptr=buf;
int ret;
struct esp_info *esp_info;
int cnt;
int eklen, aklen;
const char *sep="";
ptr=buf;
buf[0]=0; strncat(buf, "none", buflen);
ALG_INFO_ESP_FOREACH(alg_info, esp_info, cnt) {
if (kernel_alg_esp_enc_ok(esp_info->esp_ealg_id, 0, NULL)) {
DBG_log("esp algid=%d not available", esp_info->esp_ealg_id);
continue;
}
if (kernel_alg_esp_auth_ok(esp_info->esp_aalg_id, NULL)) {
DBG_log("auth algid=%d not available", esp_info->esp_aalg_id);
continue;
}
eklen=esp_info->esp_ealg_keylen;
if (!eklen)
eklen=kernel_alg_esp_enc_keylen(esp_info->esp_ealg_id)*BITS_PER_BYTE;
aklen=esp_info->esp_aalg_keylen;
if (!aklen)
aklen=kernel_alg_esp_auth_keylen(esp_info->esp_aalg_id)*BITS_PER_BYTE;
ret=snprintf(ptr, buflen, "%s%s(%d)_%03d-%s(%d)_%03d"
, sep
, enum_name(&esp_transformid_names, esp_info->esp_ealg_id)+sizeof("ESP")
, esp_info->esp_ealg_id, eklen
, enum_name(&auth_alg_names, esp_info->esp_aalg_id)+sizeof("AUTH_ALGORITHM_HMAC")
, esp_info->esp_aalg_id, aklen);
ptr+=ret;
buflen-=ret;
if (buflen<0) break;
sep = ", ";
}
return ptr-buf;
}