X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=verify.c;h=8bc34571076d403475e764a4ec41df6554234431;hp=32e7a041dec521b52574f0de1b9d37e28604f888;hb=546a9142511875524850ac92776184fd9fb7196e;hpb=97af62cec418cd722fb43c6010d6430534e12353

diff --git a/verify.c b/verify.c
index 32e7a041..8bc34571 100644
--- a/verify.c
+++ b/verify.c
@@ -12,10 +12,10 @@ static void fill_random_bytes(struct thread_data *td,
 			      unsigned char *p, unsigned int len)
 {
 	unsigned int todo;
-	double r;
+	int r;
 
 	while (len) {
-		r = os_random_double(&td->verify_state);
+		r = os_random_long(&td->verify_state);
 
 		/*
 		 * lrand48_r seems to be broken and only fill the bottom
@@ -32,6 +32,14 @@ static void fill_random_bytes(struct thread_data *td,
 	}
 }
 
+void memswp(void* buf1, void* buf2, unsigned int len)
+{
+	struct verify_header swap;
+	memcpy(&swap, buf1, len);
+	memcpy(buf1, buf2, len);
+	memcpy(buf2, &swap, len);
+}
+
 static void hexdump(void *buffer, int len)
 {
 	unsigned char *p = buffer;
@@ -42,16 +50,79 @@ static void hexdump(void *buffer, int len)
 	log_info("\n");
 }
 
-static int verify_io_u_crc32(struct verify_header *hdr, struct io_u *io_u)
+static int verify_io_u_crc7(struct verify_header *hdr, struct io_u *io_u,
+                            unsigned char header_num)
 {
-	unsigned char *p = (unsigned char *) io_u->buf;
+	unsigned char *p = io_u->buf;
+	unsigned char c;
+
+	p += header_num * hdr->len + sizeof(*hdr);
+	c = crc7(p, hdr->len - sizeof(*hdr));
+
+	if (c != hdr->crc7) {
+		log_err("crc7: verify failed at %llu/%u\n",
+		                io_u->offset + header_num * hdr->len,
+				hdr->len);
+		log_err("crc7: wanted %x, got %x\n", hdr->crc7, c);
+		return 1;
+	}
+
+	return 0;
+}
+
+static int verify_io_u_crc16(struct verify_header *hdr, struct io_u *io_u,
+                             unsigned int header_num)
+{
+	unsigned char *p = io_u->buf;
+	unsigned short c;
+
+	p += header_num * hdr->len + sizeof(*hdr);
+	c = crc16(p, hdr->len - sizeof(*hdr));
+
+	if (c != hdr->crc16) {
+		log_err("crc16: verify failed at %llu/%u\n",
+		                io_u->offset + header_num * hdr->len,
+				hdr->len);
+		log_err("crc16: wanted %x, got %x\n", hdr->crc16, c);
+		return 1;
+	}
+
+	return 0;
+}
+
+static int verify_io_u_crc64(struct verify_header *hdr, struct io_u *io_u,
+                             unsigned int header_num)
+{
+	unsigned char *p = io_u->buf;
+	unsigned long long c;
+
+	p += header_num * hdr->len + sizeof(*hdr);
+	c = crc64(p, hdr->len - sizeof(*hdr));
+
+	if (c != hdr->crc64) {
+		log_err("crc64: verify failed at %llu/%u\n",
+				io_u->offset + header_num * hdr->len,
+				hdr->len);
+		log_err("crc64: wanted %llx, got %llx\n", hdr->crc64, c);
+		return 1;
+	}
+
+	return 0;
+}
+
+static int verify_io_u_crc32(struct verify_header *hdr, struct io_u *io_u,
+		             unsigned int header_num)
+{
+	unsigned char *p = io_u->buf;
 	unsigned long c;
 
-	p += sizeof(*hdr);
+	p += header_num * hdr->len + sizeof(*hdr);
 	c = crc32(p, hdr->len - sizeof(*hdr));
 
 	if (c != hdr->crc32) {
-		log_err("crc32: verify failed at %llu/%lu\n", io_u->offset, io_u->buflen);
+		log_err("crc32: verify failed at %llu/%u\n",
+		                io_u->offset + header_num * hdr->len,
+				hdr->len);
 		log_err("crc32: wanted %lx, got %lx\n", hdr->crc32, c);
 		return 1;
 	}
@@ -59,19 +130,24 @@ static int verify_io_u_crc32(struct verify_header *hdr, struct io_u *io_u)
 	return 0;
 }
 
-static int verify_io_u_md5(struct verify_header *hdr, struct io_u *io_u)
+static int verify_io_u_md5(struct verify_header *hdr, struct io_u *io_u,
+		           unsigned int header_num)
 {
-	unsigned char *p = (unsigned char *) io_u->buf;
-	struct md5_ctx md5_ctx;
+	unsigned char *p = io_u->buf;
+	uint32_t hash[MD5_HASH_WORDS];
+	struct md5_ctx md5_ctx = {
+		.hash = hash,
+	};
 
-	memset(&md5_ctx, 0, sizeof(md5_ctx));
-	p += sizeof(*hdr);
+	p += header_num * hdr->len + sizeof(*hdr);
 	md5_update(&md5_ctx, p, hdr->len - sizeof(*hdr));
 
 	if (memcmp(hdr->md5_digest, md5_ctx.hash, sizeof(md5_ctx.hash))) {
-		log_err("md5: verify failed at %llu/%lu\n", io_u->offset, io_u->buflen);
+		log_err("md5: verify failed at %llu/%u\n",
+		              io_u->offset + header_num * hdr->len,
+		              hdr->len);
 		hexdump(hdr->md5_digest, sizeof(hdr->md5_digest));
-		hexdump(md5_ctx.hash, sizeof(md5_ctx.hash));
+		hexdump(md5_ctx.hash, sizeof(hash));
 		return 1;
 	}
 
@@ -80,44 +156,82 @@ static int verify_io_u_md5(struct verify_header *hdr, struct io_u *io_u)
 
 int verify_io_u(struct thread_data *td, struct io_u *io_u)
 {
-	struct verify_header *hdr = (struct verify_header *) io_u->buf;
+	unsigned char *p = (unsigned char*) io_u->buf;
+	struct verify_header *hdr;
+	unsigned int hdr_inc, hdr_num = 0;
 	int ret;
 
-	if (td->o.verify == VERIFY_NULL)
+	if (td->o.verify == VERIFY_NULL || io_u->ddir != DDIR_READ)
 		return 0;
 
-	if (hdr->fio_magic != FIO_HDR_MAGIC) {
-		log_err("Bad verify header %x\n", hdr->fio_magic);
-		return EIO;
-	}
+	hdr_inc = io_u->buflen;
+	if (td->o.header_interval)
+		hdr_inc = td->o.header_interval;
 
-	if (hdr->verify_type == VERIFY_MD5)
-		ret = verify_io_u_md5(hdr, io_u);
-	else if (hdr->verify_type == VERIFY_CRC32)
-		ret = verify_io_u_crc32(hdr, io_u);
-	else {
-		log_err("Bad verify type %u\n", hdr->verify_type);
-		ret = 1;
-	}
+	for (; p < (unsigned char*) io_u->buf + io_u->buflen; p += hdr_inc) {
+		if (td->o.header_offset)
+			memswp(p, &p[td->o.header_offset], sizeof(*hdr));
+
+		hdr = (struct verify_header*) p;
 
-	if (ret)
-		return EIO;
+		if (hdr->fio_magic != FIO_HDR_MAGIC) {
+			log_err("Bad verify header %x\n", hdr->fio_magic);
+			return EIO;
+		}
+
+		switch (hdr->verify_type) {
+		case VERIFY_MD5:
+			ret = verify_io_u_md5(hdr, io_u, hdr_num);
+			break;
+		case VERIFY_CRC64:
+			ret = verify_io_u_crc64(hdr, io_u, hdr_num);
+			break;
+		case VERIFY_CRC32:
+			ret = verify_io_u_crc32(hdr, io_u, hdr_num);
+			break;
+		case VERIFY_CRC16:
+			ret = verify_io_u_crc16(hdr, io_u, hdr_num);
+			break;
+		case VERIFY_CRC7:
+			ret = verify_io_u_crc7(hdr, io_u, hdr_num);
+			break;
+		default:
+			log_err("Bad verify type %u\n", hdr->verify_type);
+			ret = 1;
+		}
+		hdr_num++;
+	}
 
 	return 0;
 }
 
+static void fill_crc7(struct verify_header *hdr, void *p, unsigned int len)
+{
+	hdr->crc7 = crc7(p, len);
+}
+
+static void fill_crc16(struct verify_header *hdr, void *p, unsigned int len)
+{
+	hdr->crc16 = crc16(p, len);
+}
+
 static void fill_crc32(struct verify_header *hdr, void *p, unsigned int len)
 {
 	hdr->crc32 = crc32(p, len);
 }
 
+static void fill_crc64(struct verify_header *hdr, void *p, unsigned int len)
+{
+	hdr->crc64 = crc64(p, len);
+}
+
 static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
 {
-	struct md5_ctx md5_ctx;
+	struct md5_ctx md5_ctx = {
+		.hash = (uint32_t *) hdr->md5_digest,
+	};
 
-	memset(&md5_ctx, 0, sizeof(md5_ctx));
 	md5_update(&md5_ctx, p, len);
-	memcpy(hdr->md5_digest, md5_ctx.hash, sizeof(md5_ctx.hash));
 }
 
 /*
@@ -126,26 +240,51 @@ static void fill_md5(struct verify_header *hdr, void *p, unsigned int len)
  */
 void populate_verify_io_u(struct thread_data *td, struct io_u *io_u)
 {
-	unsigned char *p = (unsigned char *) io_u->buf;
-	struct verify_header hdr;
+	struct verify_header *hdr;
+	unsigned char *p = io_u->buf, *data;
+	unsigned int hdr_inc, data_len;
 
 	if (td->o.verify == VERIFY_NULL)
 		return;
 
-	hdr.fio_magic = FIO_HDR_MAGIC;
-	hdr.len = io_u->buflen;
-	p += sizeof(hdr);
-	fill_random_bytes(td, p, io_u->buflen - sizeof(hdr));
-
-	if (td->o.verify == VERIFY_MD5) {
-		fill_md5(&hdr, p, io_u->buflen - sizeof(hdr));
-		hdr.verify_type = VERIFY_MD5;
-	} else if (td->o.verify == VERIFY_CRC32) {
-		fill_crc32(&hdr, p, io_u->buflen - sizeof(hdr));
-		hdr.verify_type = VERIFY_CRC32;
+	fill_random_bytes(td, p, io_u->buflen);
+
+	hdr_inc = io_u->buflen;
+	if (td->o.header_interval)
+		hdr_inc = td->o.header_interval;
+	data_len = hdr_inc - sizeof(*hdr);
+
+	for (;p < (unsigned char*) io_u->buf + io_u->buflen; p += hdr_inc) {
+		hdr = (struct verify_header*) p;
+
+		hdr->fio_magic = FIO_HDR_MAGIC;
+		hdr->verify_type = td->o.verify;
+		hdr->len = hdr_inc;
+
+		data = p + sizeof(*hdr);
+		switch (td->o.verify) {
+		case VERIFY_MD5:
+			fill_md5(hdr, data, data_len);
+			break;
+		case VERIFY_CRC64:
+			fill_crc64(hdr, data, data_len);
+			break;
+		case VERIFY_CRC32:
+			fill_crc32(hdr, data, data_len);
+			break;
+		case VERIFY_CRC16:
+			fill_crc16(hdr, data, data_len);
+			break;
+		case VERIFY_CRC7:
+			fill_crc7(hdr, data, data_len);
+			break;
+		default:
+			log_err("fio: bad verify type: %d\n", td->o.verify);
+			assert(0);
+		}
+		if (td->o.header_offset)
+			memswp(p, &p[td->o.header_offset], sizeof(*hdr));
 	}
-
-	memcpy(io_u->buf, &hdr, sizeof(hdr));
 }
 
 int get_next_verify(struct thread_data *td, struct io_u *io_u)