use shorts to move data

SCCS-vsn: sys/vax/if/if_ec.c 4.13

diff --git a/usr/src/sys/vax/if/if_ec.c b/usr/src/sys/vax/if/if_ec.c
index 0d65245..3aa5f69 100644 (file)
--- a/usr/src/sys/vax/if/if_ec.c
+++ b/usr/src/sys/vax/if/if_ec.c
@@ -655,7 +655,19 @@ COUNT(ECPUT);
        mp = m;
        while (mp) {
                mcp = mtod(mp, char *);
        mp = m;
        while (mp) {
                mcp = mtod(mp, char *);

+               i = 0;
+               if ((int)bp&1) {
+                       *bp++ = *mcp++;
+                       i++;
+               }

                for (i=0; i<mp->m_len; i++)
                for (i=0; i<mp->m_len; i++)

+               while (i < mp->m_len) {
+                       *(short *)bp = *(short *)mcp;
+                       bp += 2;
+                       mcp += 2;
+                       i += 2;
+               }
+               if (mp->m_len&1)

                        *bp++ = *mcp++;
                mp = m_free(mp);
        }
                        *bp++ = *mcp++;
                mp = m_free(mp);
        }


@@ -666,6 +678,9 @@ COUNT(ECPUT);
 /*
  * Routine to copy from UNIBUS memory into mbufs.
  * Similar in spirit to if_rubaget.
 /*
  * Routine to copy from UNIBUS memory into mbufs.
  * Similar in spirit to if_rubaget.

+ *
+ * Warning: This makes the fairly safe assumption that
+ * mbufs have even lengths.

  */
 struct mbuf *
 ecget(ecbuf, totlen, off0)
  */
 struct mbuf *
 ecget(ecbuf, totlen, off0)


@@ -707,7 +722,12 @@ COUNT(ECGET);
                        m->m_off = MMINOFF;
                }
                mcp = mtod(m, char *);
                        m->m_off = MMINOFF;
                }
                mcp = mtod(m, char *);

-               for (i=0; i<len; i++)
+               for (i=0; i<len; i+=2) {
+                       *(short *)mcp = *(short *)cp;
+                       mcp += 2;
+                       cp += 2;
+               }
+               if (len&1)

                        *mcp++ = *cp++;
                *mp = m;
                mp = &m->m_next;
                        *mcp++ = *cp++;
                *mp = m;
                mp = &m->m_next;